76679917 has 2 divisors, whose sum is σ = 76679918. Its totient is φ = 76679916.

The previous prime is 76679903. The next prime is 76679921. The reversal of 76679917 is 71997667.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 75794436 + 885481 = 8706^2 + 941^2 .

It is a cyclic number.

It is not a de Polignac number, because 76679917 - 2⁷ = 76679789 is a prime.

It is a super-2 number, since 2×76679917² = 11759619342253778, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (76679987) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38339958 + 38339959.

It is an arithmetic number, because the mean of its divisors is an integer number (38339959).

Almost surely, 2^76679917 is an apocalyptic number.

It is an amenable number.

76679917 is a deficient number, since it is larger than the sum of its proper divisors (1).

76679917 is an equidigital number, since it uses as much as digits as its factorization.

76679917 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1000188, while the sum is 52.

The square root of 76679917 is about 8756.7069723727. The cubic root of 76679917 is about 424.8417717792.

The spelling of 76679917 in words is "seventy-six million, six hundred seventy-nine thousand, nine hundred seventeen".