72573064 has 8 divisors (see below), whose sum is σ = 136074510. Its totient is φ = 36286528.

The previous prime is 72573047. The next prime is 72573089. The reversal of 72573064 is 46037527.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 40424164 + 32148900 = 6358^2 + 5670^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4535809 + ... + 4535824.

Almost surely, 2^72573064 is an apocalyptic number.

It is an amenable number.

72573064 is a deficient number, since it is larger than the sum of its proper divisors (63501446).

72573064 is a wasteful number, since it uses less digits than its factorization.

72573064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9071639 (or 9071635 counting only the distinct ones).

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

The square root of 72573064 is about 8518.9825683587. The cubic root of 72573064 is about 417.1175725231.

The spelling of 72573064 in words is "seventy-two million, five hundred seventy-three thousand, sixty-four".