74431263 has 8 divisors (see below), whose sum is σ = 99338800. Its totient is φ = 49572288.

The previous prime is 74431261. The next prime is 74431327. The reversal of 74431263 is 36213447.

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

It is not a de Polignac number, because 74431263 - 2¹ = 74431261 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 74431263.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74431261) 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, 8398 + ... + 14811.

It is an arithmetic number, because the mean of its divisors is an integer number (12417350).

Almost surely, 2^74431263 is an apocalyptic number.

74431263 is a deficient number, since it is larger than the sum of its proper divisors (24907537).

74431263 is a wasteful number, since it uses less digits than its factorization.

74431263 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24281.

The product of its digits is 12096, while the sum is 30.

The square root of 74431263 is about 8627.3555044405. The cubic root of 74431263 is about 420.6476459322.

The spelling of 74431263 in words is "seventy-four million, four hundred thirty-one thousand, two hundred sixty-three".