72866474 has 4 divisors (see below), whose sum is σ = 109299714. Its totient is φ = 36433236.

The previous prime is 72866459. The next prime is 72866489. The reversal of 72866474 is 47466827.

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

It is an interprime number because it is at equal distance from previous prime (72866459) and next prime (72866489).

It can be written as a sum of positive squares in only one way, i.e., 43652449 + 29214025 = 6607^2 + 5405^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18216617 + ... + 18216620.

Almost surely, 2^72866474 is an apocalyptic number.

72866474 is a deficient number, since it is larger than the sum of its proper divisors (36433240).

72866474 is a wasteful number, since it uses less digits than its factorization.

72866474 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36433239.

The product of its digits is 451584, while the sum is 44.

The square root of 72866474 is about 8536.1861507350. The cubic root of 72866474 is about 417.6789465608.

The spelling of 72866474 in words is "seventy-two million, eight hundred sixty-six thousand, four hundred seventy-four".