72869555 has 16 divisors (see below), whose sum is σ = 95573088. Its totient is φ = 52896000.

The previous prime is 72869527. The next prime is 72869611. The reversal of 72869555 is 55596827.

It is not a de Polignac number, because 72869555 - 2⁶ = 72869491 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 40985 + ... + 42725.

It is an arithmetic number, because the mean of its divisors is an integer number (5973318).

Almost surely, 2^72869555 is an apocalyptic number.

72869555 is a deficient number, since it is larger than the sum of its proper divisors (22703533).

72869555 is a wasteful number, since it uses less digits than its factorization.

72869555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2518.

The product of its digits is 756000, while the sum is 47.

The square root of 72869555 is about 8536.3666158384. The cubic root of 72869555 is about 417.6848333590.

The spelling of 72869555 in words is "seventy-two million, eight hundred sixty-nine thousand, five hundred fifty-five".