74797823 has 4 divisors (see below), whose sum is σ = 77210688. Its totient is φ = 72384960.

The previous prime is 74797819. The next prime is 74797829. The reversal of 74797823 is 32879747.

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 74797823 - 2² = 74797819 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 (74797829) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1206386 + ... + 1206447.

It is an arithmetic number, because the mean of its divisors is an integer number (19302672).

Almost surely, 2^74797823 is an apocalyptic number.

74797823 is a deficient number, since it is larger than the sum of its proper divisors (2412865).

74797823 is a wasteful number, since it uses less digits than its factorization.

74797823 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2412864.

The product of its digits is 592704, while the sum is 47.

The square root of 74797823 is about 8648.5734661850. The cubic root of 74797823 is about 421.3370523365.

The spelling of 74797823 in words is "seventy-four million, seven hundred ninety-seven thousand, eight hundred twenty-three".