79663663 has 2 divisors, whose sum is σ = 79663664. Its totient is φ = 79663662.

The previous prime is 79663613. The next prime is 79663673. The reversal of 79663663 is 36636697.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-79663663 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (79663613) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39831831 + 39831832.

It is an arithmetic number, because the mean of its divisors is an integer number (39831832).

Almost surely, 2^79663663 is an apocalyptic number.

79663663 is a deficient number, since it is larger than the sum of its proper divisors (1).

79663663 is an equidigital number, since it uses as much as digits as its factorization.

79663663 is an evil number, because the sum of its binary digits is even.

The product of its digits is 734832, while the sum is 46.

The square root of 79663663 is about 8925.4502967637. The cubic root of 79663663 is about 430.2822430407.

The spelling of 79663663 in words is "seventy-nine million, six hundred sixty-three thousand, six hundred sixty-three".