74720634 has 8 divisors (see below), whose sum is σ = 149441280. Its totient is φ = 24906876.

The previous prime is 74720623. The next prime is 74720641. The reversal of 74720634 is 43602747.

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

74720634 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 74720595 and 74720604.

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, 6226714 + ... + 6226725.

It is an arithmetic number, because the mean of its divisors is an integer number (18680160).

Almost surely, 2^74720634 is an apocalyptic number.

74720634 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

74720634 is a wasteful number, since it uses less digits than its factorization.

74720634 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12453444.

The product of its (nonzero) digits is 28224, while the sum is 33.

The square root of 74720634 is about 8644.1097864384. The cubic root of 74720634 is about 421.1920669244.

The spelling of 74720634 in words is "seventy-four million, seven hundred twenty thousand, six hundred thirty-four".