74648621 has 8 divisors (see below), whose sum is σ = 75354720. Its totient is φ = 73945872.

The previous prime is 74648617. The next prime is 74648627. The reversal of 74648621 is 12684647.

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

It is a cyclic number.

It is not a de Polignac number, because 74648621 - 2² = 74648617 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74648627) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 67751 + ... + 68843.

It is an arithmetic number, because the mean of its divisors is an integer number (9419340).

Almost surely, 2^74648621 is an apocalyptic number.

It is an amenable number.

74648621 is a deficient number, since it is larger than the sum of its proper divisors (706099).

74648621 is a wasteful number, since it uses less digits than its factorization.

74648621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1675.

The product of its digits is 64512, while the sum is 38.

The square root of 74648621 is about 8639.9433447217. The cubic root of 74648621 is about 421.0567136224.

The spelling of 74648621 in words is "seventy-four million, six hundred forty-eight thousand, six hundred twenty-one".