72658811 has 2 divisors, whose sum is σ = 72658812. Its totient is φ = 72658810.

The previous prime is 72658763. The next prime is 72658829. The reversal of 72658811 is 11885627.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-72658811 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (72658111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36329405 + 36329406.

It is an arithmetic number, because the mean of its divisors is an integer number (36329406).

Almost surely, 2^72658811 is an apocalyptic number.

72658811 is a deficient number, since it is larger than the sum of its proper divisors (1).

72658811 is an equidigital number, since it uses as much as digits as its factorization.

72658811 is an evil number, because the sum of its binary digits is even.

The product of its digits is 26880, while the sum is 38.

The square root of 72658811 is about 8524.0137845970. The cubic root of 72658811 is about 417.2817863575.

The spelling of 72658811 in words is "seventy-two million, six hundred fifty-eight thousand, eight hundred eleven".