74768445 has 18 divisors (see below), whose sum is σ = 129699258. Its totient is φ = 39845568.

The previous prime is 74768429. The next prime is 74768459. The reversal of 74768445 is 54486747.

It can be written as a sum of positive squares in 3 ways, for example, as 27941796 + 46826649 = 5286^2 + 6843^2 .

It is not a de Polignac number, because 74768445 - 2⁴ = 74768429 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 74768445.

It is a congruent number.

It is an unprimeable number.

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 17 ways as a sum of consecutive naturals, for example, 57361 + ... + 58649.

Almost surely, 2^74768445 is an apocalyptic number.

It is an amenable number.

74768445 is a deficient number, since it is larger than the sum of its proper divisors (54930813).

74768445 is an equidigital number, since it uses as much as digits as its factorization.

74768445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2589 (or 1297 counting only the distinct ones).

The product of its digits is 752640, while the sum is 45.

The square root of 74768445 is about 8646.8748689917. The cubic root of 74768445 is about 421.2818829018.

Multiplying 74768445 by its sum of digits (45), we get a square (3364580025 = 58005²).

74768445 divided by its sum of digits (45) gives a square (1661521 = 1289²).

The spelling of 74768445 in words is "seventy-four million, seven hundred sixty-eight thousand, four hundred forty-five".