72768679 has 2 divisors, whose sum is σ = 72768680. Its totient is φ = 72768678.

The previous prime is 72768659. The next prime is 72768701. The reversal of 72768679 is 97686727.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-72768679 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (72768659) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36384339 + 36384340.

It is an arithmetic number, because the mean of its divisors is an integer number (36384340).

Almost surely, 2^72768679 is an apocalyptic number.

72768679 is a deficient number, since it is larger than the sum of its proper divisors (1).

72768679 is an equidigital number, since it uses as much as digits as its factorization.

72768679 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1778112, while the sum is 52.

The square root of 72768679 is about 8530.4559667113. The cubic root of 72768679 is about 417.4920055361.

The spelling of 72768679 in words is "seventy-two million, seven hundred sixty-eight thousand, six hundred seventy-nine".