74388646 has 8 divisors (see below), whose sum is σ = 113412384. Its totient is φ = 36584520.

The previous prime is 74388593. The next prime is 74388653. The reversal of 74388646 is 64688347.

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

It is a junction number, because it is equal to n+sod(n) for n = 74388596 and 74388605.

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, 304750 + ... + 304993.

It is an arithmetic number, because the mean of its divisors is an integer number (14176548).

Almost surely, 2^74388646 is an apocalyptic number.

74388646 is a deficient number, since it is larger than the sum of its proper divisors (39023738).

74388646 is a wasteful number, since it uses less digits than its factorization.

74388646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 609806.

The product of its digits is 774144, while the sum is 46.

The square root of 74388646 is about 8624.8852745993. The cubic root of 74388646 is about 420.5673474012.

The spelling of 74388646 in words is "seventy-four million, three hundred eighty-eight thousand, six hundred forty-six".