76715861 has 2 divisors, whose sum is σ = 76715862. Its totient is φ = 76715860.

The previous prime is 76715831. The next prime is 76715867. The reversal of 76715861 is 16851767.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 62884900 + 13830961 = 7930^2 + 3719^2 .

It is a cyclic number.

It is not a de Polignac number, because 76715861 - 2²² = 72521557 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is equal to p_4488872 and since 76715861 and 4488872 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (76715867) 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, 38357930 + 38357931.

It is an arithmetic number, because the mean of its divisors is an integer number (38357931).

Almost surely, 2^76715861 is an apocalyptic number.

It is an amenable number.

76715861 is a deficient number, since it is larger than the sum of its proper divisors (1).

76715861 is an equidigital number, since it uses as much as digits as its factorization.

76715861 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 70560, while the sum is 41.

The square root of 76715861 is about 8758.7591016079. The cubic root of 76715861 is about 424.9081434700.

The spelling of 76715861 in words is "seventy-six million, seven hundred fifteen thousand, eight hundred sixty-one".