74843621 has 8 divisors (see below), whose sum is σ = 75390144. Its totient is φ = 74299680.

The previous prime is 74843591. The next prime is 74843647. The reversal of 74843621 is 12634847.

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 74843621 - 2⁶ = 74843557 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74843921) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 152186 + ... + 152676.

It is an arithmetic number, because the mean of its divisors is an integer number (9423768).

Almost surely, 2^74843621 is an apocalyptic number.

It is an amenable number.

74843621 is a deficient number, since it is larger than the sum of its proper divisors (546523).

74843621 is a wasteful number, since it uses less digits than its factorization.

74843621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1291.

The product of its digits is 32256, while the sum is 35.

The square root of 74843621 is about 8651.2207809072. The cubic root of 74843621 is about 421.4230283563.

The spelling of 74843621 in words is "seventy-four million, eight hundred forty-three thousand, six hundred twenty-one".