Search a number
-
+
76654081 = 721564369
BaseRepresentation
bin1001001000110…
…10011000000001
312100020102122001
410210122120001
5124110412311
611334544001
71620356200
oct444323001
9170212561
1076654081
113a2a6389
1221808001
1312b5b45a
14a275237
156ae24c1
hex491a601

76654081 has 6 divisors (see below), whose sum is σ = 89169090. Its totient is φ = 65703456.

The previous prime is 76654063. The next prime is 76654099. The reversal of 76654081 is 18045667.

It is an interprime number because it is at equal distance from previous prime (76654063) and next prime (76654099).

It can be written as a sum of positive squares in only one way, i.e., 50183056 + 26471025 = 7084^2 + 5145^2 .

It is not a de Polignac number, because 76654081 - 25 = 76654049 is a prime.

It is a super-2 number, since 2×766540812 = 11751696267909122, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 76654081.

It is not an unprimeable number, because it can be changed into a prime (76654001) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 782136 + ... + 782233.

It is an arithmetic number, because the mean of its divisors is an integer number (14861515).

Almost surely, 276654081 is an apocalyptic number.

It is an amenable number.

76654081 is a deficient number, since it is larger than the sum of its proper divisors (12515009).

76654081 is a wasteful number, since it uses less digits than its factorization.

76654081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1564383 (or 1564376 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 37.

The square root of 76654081 is about 8755.2316359991. The cubic root of 76654081 is about 424.7940520049.

The spelling of 76654081 in words is "seventy-six million, six hundred fifty-four thousand, eighty-one".

Divisors: 1 7 49 1564369 10950583 76654081