72666362 has 4 divisors (see below), whose sum is σ = 108999546. Its totient is φ = 36333180.

The previous prime is 72666359. The next prime is 72666383. The reversal of 72666362 is 26366627.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 69572281 + 3094081 = 8341^2 + 1759^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18166589 + ... + 18166592.

Almost surely, 2^72666362 is an apocalyptic number.

72666362 is a deficient number, since it is larger than the sum of its proper divisors (36333184).

72666362 is a wasteful number, since it uses less digits than its factorization.

72666362 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36333183.

The product of its digits is 108864, while the sum is 38.

The square root of 72666362 is about 8524.4566982301. The cubic root of 72666362 is about 417.2962410652.

The spelling of 72666362 in words is "seventy-two million, six hundred sixty-six thousand, three hundred sixty-two".