74318749 has 16 divisors (see below), whose sum is σ = 79298560. Its totient is φ = 69536880.

The previous prime is 74318743. The next prime is 74318779. The reversal of 74318749 is 94781347.

It is a cyclic number.

It is not a de Polignac number, because 74318749 - 2²³ = 65930141 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (43).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74318743) 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 15 ways as a sum of consecutive naturals, for example, 169072 + ... + 169510.

It is an arithmetic number, because the mean of its divisors is an integer number (4956160).

Almost surely, 2^74318749 is an apocalyptic number.

It is an amenable number.

74318749 is a deficient number, since it is larger than the sum of its proper divisors (4979811).

74318749 is a wasteful number, since it uses less digits than its factorization.

74318749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 640.

The product of its digits is 169344, while the sum is 43.

The square root of 74318749 is about 8620.8322684066. The cubic root of 74318749 is about 420.4355817380.

The spelling of 74318749 in words is "seventy-four million, three hundred eighteen thousand, seven hundred forty-nine".