72079966 has 16 divisors (see below), whose sum is σ = 130834656. Its totient is φ = 29074176.

The previous prime is 72079961. The next prime is 72080003. The reversal of 72079966 is 66997027.

It is a super-2 number, since 2×72079966² = 10391042997122312, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72079961) 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, 151191 + ... + 151666.

It is an arithmetic number, because the mean of its divisors is an integer number (8177166).

Almost surely, 2^72079966 is an apocalyptic number.

72079966 is a deficient number, since it is larger than the sum of its proper divisors (58754690).

72079966 is a wasteful number, since it uses less digits than its factorization.

72079966 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 302883.

The product of its (nonzero) digits is 285768, while the sum is 46.

The square root of 72079966 is about 8489.9921083591. The cubic root of 72079966 is about 416.1707224263.

The spelling of 72079966 in words is "seventy-two million, seventy-nine thousand, nine hundred sixty-six".