76615769 has 2 divisors, whose sum is σ = 76615770. Its totient is φ = 76615768.

The previous prime is 76615751. The next prime is 76615823. The reversal of 76615769 is 96751667.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 74166544 + 2449225 = 8612^2 + 1565^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-76615769 is a prime.

It is a super-2 number, since 2×76615769² = 11739952118922722, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (76615729) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38307884 + 38307885.

It is an arithmetic number, because the mean of its divisors is an integer number (38307885).

Almost surely, 2^76615769 is an apocalyptic number.

It is an amenable number.

76615769 is a deficient number, since it is larger than the sum of its proper divisors (1).

76615769 is an equidigital number, since it uses as much as digits as its factorization.

76615769 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 476280, while the sum is 47.

The square root of 76615769 is about 8753.0434135791. The cubic root of 76615769 is about 424.7232689857.

The spelling of 76615769 in words is "seventy-six million, six hundred fifteen thousand, seven hundred sixty-nine".