74427345 has 24 divisors (see below), whose sum is σ = 130568256. Its totient is φ = 39214368.

The previous prime is 74427329. The next prime is 74427359. The reversal of 74427345 is 54372447.

It is not a de Polignac number, because 74427345 - 2⁴ = 74427329 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6229 + ... + 13698.

It is an arithmetic number, because the mean of its divisors is an integer number (5440344).

Almost surely, 2^74427345 is an apocalyptic number.

It is an amenable number.

74427345 is a deficient number, since it is larger than the sum of its proper divisors (56140911).

74427345 is a wasteful number, since it uses less digits than its factorization.

74427345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20021 (or 20018 counting only the distinct ones).

The product of its digits is 94080, while the sum is 36.

The square root of 74427345 is about 8627.1284330303. The cubic root of 74427345 is about 420.6402649549.

The spelling of 74427345 in words is "seventy-four million, four hundred twenty-seven thousand, three hundred forty-five".