79567643 has 2 divisors, whose sum is σ = 79567644. Its totient is φ = 79567642.

The previous prime is 79567637. The next prime is 79567727. The reversal of 79567643 is 34676597.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 79567643 - 2⁴ = 79567627 is a prime.

It is not a weakly prime, because it can be changed into another prime (79567613) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39783821 + 39783822.

It is an arithmetic number, because the mean of its divisors is an integer number (39783822).

Almost surely, 2^79567643 is an apocalyptic number.

79567643 is a deficient number, since it is larger than the sum of its proper divisors (1).

79567643 is an equidigital number, since it uses as much as digits as its factorization.

79567643 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 952560, while the sum is 47.

The square root of 79567643 is about 8920.0696746158. The cubic root of 79567643 is about 430.1092979778.

The spelling of 79567643 in words is "seventy-nine million, five hundred sixty-seven thousand, six hundred forty-three".