74875646 has 4 divisors (see below), whose sum is σ = 112313472. Its totient is φ = 37437822.

The previous prime is 74875631. The next prime is 74875663. The reversal of 74875646 is 64657847.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 64657847 = 31 ⋅2085737.

It is a self number, because there is not a number n which added to its sum of digits gives 74875646.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18718910 + ... + 18718913.

It is an arithmetic number, because the mean of its divisors is an integer number (28078368).

Almost surely, 2^74875646 is an apocalyptic number.

74875646 is a deficient number, since it is larger than the sum of its proper divisors (37437826).

74875646 is a wasteful number, since it uses less digits than its factorization.

74875646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37437825.

The product of its digits is 1128960, while the sum is 47.

The square root of 74875646 is about 8653.0714778049. The cubic root of 74875646 is about 421.4831276575.

The spelling of 74875646 in words is "seventy-four million, eight hundred seventy-five thousand, six hundred forty-six".