76663913 has 2 divisors, whose sum is σ = 76663914. Its totient is φ = 76663912.

The previous prime is 76663877. The next prime is 76663919. The reversal of 76663913 is 31936667.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 75290329 + 1373584 = 8677^2 + 1172^2 .

It is a cyclic number.

It is not a de Polignac number, because 76663913 - 2²² = 72469609 is a prime.

It is not a weakly prime, because it can be changed into another prime (76663919) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38331956 + 38331957.

It is an arithmetic number, because the mean of its divisors is an integer number (38331957).

Almost surely, 2^76663913 is an apocalyptic number.

It is an amenable number.

76663913 is a deficient number, since it is larger than the sum of its proper divisors (1).

76663913 is an equidigital number, since it uses as much as digits as its factorization.

76663913 is an evil number, because the sum of its binary digits is even.

The product of its digits is 122472, while the sum is 41.

The square root of 76663913 is about 8755.7931108495. The cubic root of 76663913 is about 424.8122132322.

The spelling of 76663913 in words is "seventy-six million, six hundred sixty-three thousand, nine hundred thirteen".