74545456 has 40 divisors (see below), whose sum is σ = 147633408. Its totient is φ = 36456000.

The previous prime is 74545453. The next prime is 74545463. The reversal of 74545456 is 65454547.

It is a happy number.

It is an alternating number because its digits alternate between odd and even.

It is not an unprimeable number, because it can be changed into a prime (74545453) 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, 239541 + ... + 239851.

Almost surely, 2^74545456 is an apocalyptic number.

It is an amenable number.

74545456 is a deficient number, since it is larger than the sum of its proper divisors (73087952).

74545456 is a wasteful number, since it uses less digits than its factorization.

74545456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 601 (or 595 counting only the distinct ones).

The product of its digits is 336000, while the sum is 40.

The square root of 74545456 is about 8633.9710446584. The cubic root of 74545456 is about 420.8626562670.

Subtracting from 74545456 its reverse (65454547), we obtain a palindrome (9090909).

The spelling of 74545456 in words is "seventy-four million, five hundred forty-five thousand, four hundred fifty-six".