72661274 has 8 divisors (see below), whose sum is σ = 124562208. Its totient is φ = 31140540.

The previous prime is 72661249. The next prime is 72661313. The reversal of 72661274 is 47216627.

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, 2595032 + ... + 2595059.

It is an arithmetic number, because the mean of its divisors is an integer number (15570276).

Almost surely, 2^72661274 is an apocalyptic number.

72661274 is a deficient number, since it is larger than the sum of its proper divisors (51900934).

72661274 is a wasteful number, since it uses less digits than its factorization.

72661274 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5190100.

The product of its digits is 28224, while the sum is 35.

The square root of 72661274 is about 8524.1582575642. The cubic root of 72661274 is about 417.2865013325.

The spelling of 72661274 in words is "seventy-two million, six hundred sixty-one thousand, two hundred seventy-four".