72624947 has 2 divisors, whose sum is σ = 72624948. Its totient is φ = 72624946.

The previous prime is 72624943. The next prime is 72624949. The reversal of 72624947 is 74942627.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 72624947 - 2² = 72624943 is a prime.

Together with 72624949, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (72624941) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36312473 + 36312474.

It is an arithmetic number, because the mean of its divisors is an integer number (36312474).

Almost surely, 2^72624947 is an apocalyptic number.

72624947 is a deficient number, since it is larger than the sum of its proper divisors (1).

72624947 is an equidigital number, since it uses as much as digits as its factorization.

72624947 is an evil number, because the sum of its binary digits is even.

The product of its digits is 169344, while the sum is 41.

The square root of 72624947 is about 8522.0271649414. The cubic root of 72624947 is about 417.2169489524.

The spelling of 72624947 in words is "seventy-two million, six hundred twenty-four thousand, nine hundred forty-seven".