72617227 has 2 divisors, whose sum is σ = 72617228. Its totient is φ = 72617226.

The previous prime is 72617201. The next prime is 72617249. The reversal of 72617227 is 72271627.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-72617227 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 72617192 and 72617201.

It is not a weakly prime, because it can be changed into another prime (72617327) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36308613 + 36308614.

It is an arithmetic number, because the mean of its divisors is an integer number (36308614).

Almost surely, 2^72617227 is an apocalyptic number.

72617227 is a deficient number, since it is larger than the sum of its proper divisors (1).

72617227 is an equidigital number, since it uses as much as digits as its factorization.

72617227 is an evil number, because the sum of its binary digits is even.

The product of its digits is 16464, while the sum is 34.

The square root of 72617227 is about 8521.5742090297. The cubic root of 72617227 is about 417.2021651024.

The spelling of 72617227 in words is "seventy-two million, six hundred seventeen thousand, two hundred twenty-seven".