74820313 has 4 divisors (see below), whose sum is σ = 74868480. Its totient is φ = 74772148.

The previous prime is 74820283. The next prime is 74820331. The reversal of 74820313 is 31302847.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 74820313 - 2²⁵ = 41265881 is a prime.

It is a Duffinian number.

It is a plaindrome in base 13.

It is not an unprimeable number, because it can be changed into a prime (74820353) 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, 21673 + ... + 24886.

It is an arithmetic number, because the mean of its divisors is an integer number (18717120).

Almost surely, 2^74820313 is an apocalyptic number.

It is an amenable number.

74820313 is a deficient number, since it is larger than the sum of its proper divisors (48167).

74820313 is a wasteful number, since it uses less digits than its factorization.

74820313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48166.

The product of its (nonzero) digits is 4032, while the sum is 28.

The square root of 74820313 is about 8649.8735828913. The cubic root of 74820313 is about 421.3792769198.

The spelling of 74820313 in words is "seventy-four million, eight hundred twenty thousand, three hundred thirteen".