72640798 has 8 divisors (see below), whose sum is σ = 109021608. Its totient is φ = 36300264.

The previous prime is 72640783. The next prime is 72640801. The reversal of 72640798 is 89704627.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5061 + ... + 13072.

It is an arithmetic number, because the mean of its divisors is an integer number (13627701).

Almost surely, 2^72640798 is an apocalyptic number.

72640798 is a deficient number, since it is larger than the sum of its proper divisors (36380810).

72640798 is a wasteful number, since it uses less digits than its factorization.

72640798 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20138.

The product of its (nonzero) digits is 169344, while the sum is 43.

The square root of 72640798 is about 8522.9571159311. The cubic root of 72640798 is about 417.2473004366.

The spelling of 72640798 in words is "seventy-two million, six hundred forty thousand, seven hundred ninety-eight".