72985970 has 8 divisors (see below), whose sum is σ = 131374764. Its totient is φ = 29194384.

The previous prime is 72985961. The next prime is 72985987. The reversal of 72985970 is 7958927.

It can be written as a sum of positive squares in 2 ways, for example, as 68376361 + 4609609 = 8269^2 + 2147^2 .

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

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, 3649289 + ... + 3649308.

Almost surely, 2^72985970 is an apocalyptic number.

72985970 is a deficient number, since it is larger than the sum of its proper divisors (58388794).

72985970 is a wasteful number, since it uses less digits than its factorization.

72985970 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7298604.

The product of its (nonzero) digits is 317520, while the sum is 47.

The square root of 72985970 is about 8543.1826622167. The cubic root of 72985970 is about 417.9071434346.

The spelling of 72985970 in words is "seventy-two million, nine hundred eighty-five thousand, nine hundred seventy".