79663867 has 2 divisors, whose sum is σ = 79663868. Its totient is φ = 79663866.

The previous prime is 79663847. The next prime is 79663877. The reversal of 79663867 is 76836697.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 79663867 - 2⁷ = 79663739 is a prime.

It is not a weakly prime, because it can be changed into another prime (79663817) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39831933 + 39831934.

It is an arithmetic number, because the mean of its divisors is an integer number (39831934).

Almost surely, 2^79663867 is an apocalyptic number.

79663867 is a deficient number, since it is larger than the sum of its proper divisors (1).

79663867 is an equidigital number, since it uses as much as digits as its factorization.

79663867 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2286144, while the sum is 52.

The square root of 79663867 is about 8925.4617247513. The cubic root of 79663867 is about 430.2826103244.

The spelling of 79663867 in words is "seventy-nine million, six hundred sixty-three thousand, eight hundred sixty-seven".