72568231 has 2 divisors, whose sum is σ = 72568232. Its totient is φ = 72568230.

The previous prime is 72568217. The next prime is 72568247. The reversal of 72568231 is 13286527.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 72568231 - 2¹⁷ = 72437159 is a prime.

It is a super-2 number, since 2×72568231² = 10532296300938722, which contains 22 as substring.

It is a zygodrome in base 6.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (72568031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36284115 + 36284116.

It is an arithmetic number, because the mean of its divisors is an integer number (36284116).

Almost surely, 2^72568231 is an apocalyptic number.

72568231 is a deficient number, since it is larger than the sum of its proper divisors (1).

72568231 is an equidigital number, since it uses as much as digits as its factorization.

72568231 is an evil number, because the sum of its binary digits is even.

The product of its digits is 20160, while the sum is 34.

The square root of 72568231 is about 8518.6989030016. The cubic root of 72568231 is about 417.1083130088.

The spelling of 72568231 in words is "seventy-two million, five hundred sixty-eight thousand, two hundred thirty-one".