72872587 has 4 divisors (see below), whose sum is σ = 73107216. Its totient is φ = 72637960.

The previous prime is 72872567. The next prime is 72872623. The reversal of 72872587 is 78527827.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 78527827 = 7 ⋅11218261.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-72872587 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72872507) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 116848 + ... + 117469.

It is an arithmetic number, because the mean of its divisors is an integer number (18276804).

Almost surely, 2^72872587 is an apocalyptic number.

72872587 is a deficient number, since it is larger than the sum of its proper divisors (234629).

72872587 is a wasteful number, since it uses less digits than its factorization.

72872587 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 234628.

The product of its digits is 439040, while the sum is 46.

The square root of 72872587 is about 8536.5442071133. The cubic root of 72872587 is about 417.6906263721.

The spelling of 72872587 in words is "seventy-two million, eight hundred seventy-two thousand, five hundred eighty-seven".