72665054 has 48 divisors (see below), whose sum is σ = 140704128. Its totient is φ = 27342000.

The previous prime is 72665009. The next prime is 72665057. The reversal of 72665054 is 45056627.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72665057) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 147749 + ... + 148239.

It is an arithmetic number, because the mean of its divisors is an integer number (2931336).

Almost surely, 2^72665054 is an apocalyptic number.

72665054 is a deficient number, since it is larger than the sum of its proper divisors (68039074).

72665054 is a wasteful number, since it uses less digits than its factorization.

72665054 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 573 (or 542 counting only the distinct ones).

The product of its (nonzero) digits is 50400, while the sum is 35.

The square root of 72665054 is about 8524.3799774529. The cubic root of 72665054 is about 417.2937372623.

The spelling of 72665054 in words is "seventy-two million, six hundred sixty-five thousand, fifty-four".