76977497 has 2 divisors, whose sum is σ = 76977498. Its totient is φ = 76977496.

The previous prime is 76977491. The next prime is 76977499. The reversal of 76977497 is 79477967.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 56010256 + 20967241 = 7484^2 + 4579^2 .

It is a cyclic number.

It is not a de Polignac number, because 76977497 - 2¹⁴ = 76961113 is a prime.

Together with 76977499, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (76977491) 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 as a sum of consecutive naturals, namely, 38488748 + 38488749.

It is an arithmetic number, because the mean of its divisors is an integer number (38488749).

Almost surely, 2^76977497 is an apocalyptic number.

It is an amenable number.

76977497 is a deficient number, since it is larger than the sum of its proper divisors (1).

76977497 is an equidigital number, since it uses as much as digits as its factorization.

76977497 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4667544, while the sum is 56.

The square root of 76977497 is about 8773.6820662707. The cubic root of 76977497 is about 425.3906387582.

The spelling of 76977497 in words is "seventy-six million, nine hundred seventy-seven thousand, four hundred ninety-seven".