72679621 has 8 divisors (see below), whose sum is σ = 83164160. Its totient is φ = 62220528.

The previous prime is 72679613. The next prime is 72679627. The reversal of 72679621 is 12697627.

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

It is a cyclic number.

It is not a de Polignac number, because 72679621 - 2³ = 72679613 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72679627) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 220 + ... + 12058.

It is an arithmetic number, because the mean of its divisors is an integer number (10395520).

Almost surely, 2^72679621 is an apocalyptic number.

It is an amenable number.

72679621 is a deficient number, since it is larger than the sum of its proper divisors (10484539).

72679621 is a wasteful number, since it uses less digits than its factorization.

72679621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12723.

The product of its digits is 63504, while the sum is 40.

The square root of 72679621 is about 8525.2343662799. The cubic root of 72679621 is about 417.3216200449.

The spelling of 72679621 in words is "seventy-two million, six hundred seventy-nine thousand, six hundred twenty-one".