72886651 has 4 divisors (see below), whose sum is σ = 73256832. Its totient is φ = 72516472.

The previous prime is 72886601. The next prime is 72886661. The reversal of 72886651 is 15668827.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 15668827 = 137 ⋅114371.

It is a cyclic number.

It is not a de Polignac number, because 72886651 - 2⁷ = 72886523 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 72886598 and 72886607.

It is not an unprimeable number, because it can be changed into a prime (72886601) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 184795 + ... + 185188.

It is an arithmetic number, because the mean of its divisors is an integer number (18314208).

Almost surely, 2^72886651 is an apocalyptic number.

72886651 is a deficient number, since it is larger than the sum of its proper divisors (370181).

72886651 is a wasteful number, since it uses less digits than its factorization.

72886651 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 370180.

The product of its digits is 161280, while the sum is 43.

The square root of 72886651 is about 8537.3679199154. The cubic root of 72886651 is about 417.7174952920.

It can be divided in two parts, 72886 and 651, that added together give a palindrome (73537).

The spelling of 72886651 in words is "seventy-two million, eight hundred eighty-six thousand, six hundred fifty-one".