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65000497 = 131496187
BaseRepresentation
bin1111011111110…
…1010000110001
311112022100220211
43313331100301
5113120003442
610241104121
71416331552
oct367752061
9145270824
1065000497
1133766921
1219928041
131060b043
1488c0329
155a8e617
hex3dfd431

65000497 has 4 divisors (see below), whose sum is σ = 65496816. Its totient is φ = 64504180.

The previous prime is 65000473. The next prime is 65000549. The reversal of 65000497 is 79400056.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 65000497 - 223 = 56611889 is a prime.

It is a super-2 number, since 2×650004972 = 8450129220494018, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (65000437) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 247963 + ... + 248224.

It is an arithmetic number, because the mean of its divisors is an integer number (16374204).

Almost surely, 265000497 is an apocalyptic number.

It is an amenable number.

65000497 is a deficient number, since it is larger than the sum of its proper divisors (496319).

65000497 is a wasteful number, since it uses less digits than its factorization.

65000497 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 496318.

The product of its (nonzero) digits is 7560, while the sum is 31.

The square root of 65000497 is about 8062.2885708712. The cubic root of 65000497 is about 402.0736006259.

It can be divided in two parts, 6500049 and 7, that added together give a palindrome (6500056).

The spelling of 65000497 in words is "sixty-five million, four hundred ninety-seven", and thus it is an aban number.

Divisors: 1 131 496187 65000497