72722563 has 2 divisors, whose sum is σ = 72722564. Its totient is φ = 72722562.

The previous prime is 72722543. The next prime is 72722569. The reversal of 72722563 is 36522727.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 72722563 - 2⁹ = 72722051 is a prime.

It is equal to p_4268716 and since 72722563 and 4268716 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (72722569) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36361281 + 36361282.

It is an arithmetic number, because the mean of its divisors is an integer number (36361282).

Almost surely, 2^72722563 is an apocalyptic number.

72722563 is a deficient number, since it is larger than the sum of its proper divisors (1).

72722563 is an equidigital number, since it uses as much as digits as its factorization.

72722563 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 35280, while the sum is 34.

The square root of 72722563 is about 8527.7525175160. The cubic root of 72722563 is about 417.4037939130.

The spelling of 72722563 in words is "seventy-two million, seven hundred twenty-two thousand, five hundred sixty-three".