74940823 has 4 divisors (see below), whose sum is σ = 74960928. Its totient is φ = 74920720.

The previous prime is 74940793. The next prime is 74940829. The reversal of 74940823 is 32804947.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 74940823 - 2⁵ = 74940791 is a prime.

It is a super-2 number, since 2×74940823² = 11232253903834658, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74940829) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2638 + ... + 12523.

It is an arithmetic number, because the mean of its divisors is an integer number (18740232).

Almost surely, 2^74940823 is an apocalyptic number.

74940823 is a deficient number, since it is larger than the sum of its proper divisors (20105).

74940823 is a wasteful number, since it uses less digits than its factorization.

74940823 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20104.

The product of its (nonzero) digits is 48384, while the sum is 37.

The square root of 74940823 is about 8656.8367779461. The cubic root of 74940823 is about 421.6053883223.

The spelling of 74940823 in words is "seventy-four million, nine hundred forty thousand, eight hundred twenty-three".