72999806 has 8 divisors (see below), whose sum is σ = 119454264. Its totient is φ = 33181720.

The previous prime is 72999799. The next prime is 72999833. The reversal of 72999806 is 60899927.

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, 1659065 + ... + 1659108.

It is an arithmetic number, because the mean of its divisors is an integer number (14931783).

Almost surely, 2^72999806 is an apocalyptic number.

72999806 is a deficient number, since it is larger than the sum of its proper divisors (46454458).

72999806 is a wasteful number, since it uses less digits than its factorization.

72999806 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3318186.

The product of its (nonzero) digits is 489888, while the sum is 50.

The square root of 72999806 is about 8543.9923923187. The cubic root of 72999806 is about 417.9335494132.

The spelling of 72999806 in words is "seventy-two million, nine hundred ninety-nine thousand, eight hundred six".