72563164 has 6 divisors (see below), whose sum is σ = 126985544. Its totient is φ = 36281580.

The previous prime is 72563131. The next prime is 72563167. The reversal of 72563164 is 46136527.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72563167) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9070392 + ... + 9070399.

Almost surely, 2^72563164 is an apocalyptic number.

It is an amenable number.

72563164 is a deficient number, since it is larger than the sum of its proper divisors (54422380).

72563164 is a wasteful number, since it uses less digits than its factorization.

72563164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18140795 (or 18140793 counting only the distinct ones).

The product of its digits is 30240, while the sum is 34.

The square root of 72563164 is about 8518.4014932380. The cubic root of 72563164 is about 417.0986047339.

It can be divided in two parts, 72563 and 164, that added together give a palindrome (72727).

The spelling of 72563164 in words is "seventy-two million, five hundred sixty-three thousand, one hundred sixty-four".