74772646 has 8 divisors (see below), whose sum is σ = 120786624. Its totient is φ = 34510440.

The previous prime is 74772637. The next prime is 74772661. The reversal of 74772646 is 64627747.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1437910 + ... + 1437961.

It is an arithmetic number, because the mean of its divisors is an integer number (15098328).

Almost surely, 2^74772646 is an apocalyptic number.

74772646 is a deficient number, since it is larger than the sum of its proper divisors (46013978).

74772646 is a wasteful number, since it uses less digits than its factorization.

74772646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2875886.

The product of its digits is 395136, while the sum is 43.

The square root of 74772646 is about 8647.1177857133. The cubic root of 74772646 is about 421.2897729149.

The spelling of 74772646 in words is "seventy-four million, seven hundred seventy-two thousand, six hundred forty-six".