72356563 has 2 divisors, whose sum is σ = 72356564. Its totient is φ = 72356562.

The previous prime is 72356561. The next prime is 72356567. The reversal of 72356563 is 36565327.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 72356563 - 2¹ = 72356561 is a prime.

Together with 72356561, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (72356561) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36178281 + 36178282.

It is an arithmetic number, because the mean of its divisors is an integer number (36178282).

Almost surely, 2^72356563 is an apocalyptic number.

72356563 is a deficient number, since it is larger than the sum of its proper divisors (1).

72356563 is an equidigital number, since it uses as much as digits as its factorization.

72356563 is an evil number, because the sum of its binary digits is even.

The product of its digits is 113400, while the sum is 37.

The square root of 72356563 is about 8506.2661021155. The cubic root of 72356563 is about 416.7023756774.

The spelling of 72356563 in words is "seventy-two million, three hundred fifty-six thousand, five hundred sixty-three".