72567745 has 32 divisors (see below), whose sum is σ = 97090560. Its totient is φ = 51840000.

The previous prime is 72567701. The next prime is 72567797. The reversal of 72567745 is 54776527.

It is not a de Polignac number, because 72567745 - 2¹⁵ = 72534977 is a prime.

It is a super-2 number, since 2×72567745² = 10532155228770050, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 120445 + ... + 121045.

It is an arithmetic number, because the mean of its divisors is an integer number (3034080).

Almost surely, 2^72567745 is an apocalyptic number.

It is an amenable number.

72567745 is a deficient number, since it is larger than the sum of its proper divisors (24522815).

72567745 is a wasteful number, since it uses less digits than its factorization.

72567745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 697.

The product of its digits is 411600, while the sum is 43.

The square root of 72567745 is about 8518.6703774709. The cubic root of 72567745 is about 417.1073818617.

The spelling of 72567745 in words is "seventy-two million, five hundred sixty-seven thousand, seven hundred forty-five".