76669565 has 12 divisors (see below), whose sum is σ = 107024796. Its totient is φ = 52573248.

The previous prime is 76669553. The next prime is 76669577. The reversal of 76669565 is 56596667.

It is an interprime number because it is at equal distance from previous prime (76669553) and next prime (76669577).

It can be written as a sum of positive squares in 2 ways, for example, as 38464804 + 38204761 = 6202^2 + 6181^2 .

It is not a de Polignac number, because 76669565 - 2⁸ = 76669309 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 156224 + ... + 156713.

It is an arithmetic number, because the mean of its divisors is an integer number (8918733).

Almost surely, 2^76669565 is an apocalyptic number.

It is an amenable number.

76669565 is a deficient number, since it is larger than the sum of its proper divisors (30355231).

76669565 is a wasteful number, since it uses less digits than its factorization.

76669565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 312956 (or 312949 counting only the distinct ones).

The product of its digits is 2041200, while the sum is 50.

The square root of 76669565 is about 8756.1158626414. The cubic root of 76669565 is about 424.8226526490.

The spelling of 76669565 in words is "seventy-six million, six hundred sixty-nine thousand, five hundred sixty-five".