76965557 has 2 divisors, whose sum is σ = 76965558. Its totient is φ = 76965556.

The previous prime is 76965517. The next prime is 76965563. The reversal of 76965557 is 75556967.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 39828721 + 37136836 = 6311^2 + 6094^2 .

It is an emirp because it is prime and its reverse (75556967) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 76965557 - 2¹² = 76961461 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (76965517) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38482778 + 38482779.

It is an arithmetic number, because the mean of its divisors is an integer number (38482779).

Almost surely, 2^76965557 is an apocalyptic number.

It is an amenable number.

76965557 is a deficient number, since it is larger than the sum of its proper divisors (1).

76965557 is an equidigital number, since it uses as much as digits as its factorization.

76965557 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1984500, while the sum is 50.

The square root of 76965557 is about 8773.0015958052. The cubic root of 76965557 is about 425.3686434693.

The spelling of 76965557 in words is "seventy-six million, nine hundred sixty-five thousand, five hundred fifty-seven".