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76769461 = 103374317
BaseRepresentation
bin1001001001101…
…10100010110101
312100110021220101
410210312202311
5124123110321
611341234101
71621346446
oct444664265
9170407811
1076769461
113a37503a
1221862931
1312b9bb22
14a2a52cd
156b16791
hex49368b5

76769461 has 4 divisors (see below), whose sum is σ = 76844812. Its totient is φ = 76694112.

The previous prime is 76769453. The next prime is 76769477. The reversal of 76769461 is 16496767.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 16496767 = 72356681.

It can be written as a sum of positive squares in 2 ways, for example, as 61324561 + 15444900 = 7831^2 + 3930^2 .

It is a cyclic number.

It is not a de Polignac number, because 76769461 - 23 = 76769453 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (76769411) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36126 + ... + 38191.

It is an arithmetic number, because the mean of its divisors is an integer number (19211203).

Almost surely, 276769461 is an apocalyptic number.

It is an amenable number.

76769461 is a deficient number, since it is larger than the sum of its proper divisors (75351).

76769461 is a wasteful number, since it uses less digits than its factorization.

76769461 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75350.

The product of its digits is 381024, while the sum is 46.

The square root of 76769461 is about 8761.8183615046. The cubic root of 76769461 is about 425.0070790055.

The spelling of 76769461 in words is "seventy-six million, seven hundred sixty-nine thousand, four hundred sixty-one".

Divisors: 1 1033 74317 76769461