72637169 has 8 divisors (see below), whose sum is σ = 79302240. Its totient is φ = 65982400.

The previous prime is 72637139. The next prime is 72637183. The reversal of 72637169 is 96173627.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 72637169 - 2⁸ = 72636913 is a prime.

It is a super-2 number, since 2×72637169² = 10552316640669122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72637129) 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 7 ways as a sum of consecutive naturals, for example, 26537 + ... + 29145.

It is an arithmetic number, because the mean of its divisors is an integer number (9912780).

Almost surely, 2^72637169 is an apocalyptic number.

It is an amenable number.

72637169 is a deficient number, since it is larger than the sum of its proper divisors (6665071).

72637169 is a wasteful number, since it uses less digits than its factorization.

72637169 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5151.

The product of its digits is 95256, while the sum is 41.

The square root of 72637169 is about 8522.7442176801. The cubic root of 72637169 is about 417.2403520195.

The spelling of 72637169 in words is "seventy-two million, six hundred thirty-seven thousand, one hundred sixty-nine".