76691513 has 2 divisors, whose sum is σ = 76691514. Its totient is φ = 76691512.

The previous prime is 76691473. The next prime is 76691519. The reversal of 76691513 is 31519667.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 74874409 + 1817104 = 8653^2 + 1348^2 .

It is a cyclic number.

It is not a de Polignac number, because 76691513 - 2⁶ = 76691449 is a prime.

It is equal to p_4487528 and since 76691513 and 4487528 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (76691519) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38345756 + 38345757.

It is an arithmetic number, because the mean of its divisors is an integer number (38345757).

Almost surely, 2^76691513 is an apocalyptic number.

It is an amenable number.

76691513 is a deficient number, since it is larger than the sum of its proper divisors (1).

76691513 is an equidigital number, since it uses as much as digits as its factorization.

76691513 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 34020, while the sum is 38.

The square root of 76691513 is about 8757.3690683903. The cubic root of 76691513 is about 424.8631864123.

The spelling of 76691513 in words is "seventy-six million, six hundred ninety-one thousand, five hundred thirteen".