79624621 has 8 divisors (see below), whose sum is σ = 80410400. Its totient is φ = 78842160.

The previous prime is 79624613. The next prime is 79624631. The reversal of 79624621 is 12642697.

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

It is a 3-Lehmer number, since φ(79624621) divides (79624621-1)³.

It is a cyclic number.

It is a Carmichael number.

It is not a de Polignac number, because 79624621 - 2³ = 79624613 is a prime.

It is a deceptive number, since it divides R_79624620.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79624631) 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, 95635 + ... + 96463.

It is an arithmetic number, because the mean of its divisors is an integer number (10051300).

It is a Poulet number, since it divides 2^79624620-1.

Almost surely, 2^79624621 is an apocalyptic number.

It is an amenable number.

79624621 is a deficient number, since it is larger than the sum of its proper divisors (785779).

79624621 is a wasteful number, since it uses less digits than its factorization.

79624621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1659.

The product of its digits is 36288, while the sum is 37.

The square root of 79624621 is about 8923.2629121863. The cubic root of 79624621 is about 430.2119398695.

The spelling of 79624621 in words is "seventy-nine million, six hundred twenty-four thousand, six hundred twenty-one".