74936545 has 4 divisors (see below), whose sum is σ = 89923860. Its totient is φ = 59949232.

The previous prime is 74936539. The next prime is 74936567. The reversal of 74936545 is 54563947.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 54563947 = 43 ⋅1268929.

It can be written as a sum of positive squares in 2 ways, for example, as 45037521 + 29899024 = 6711^2 + 5468^2 .

It is a cyclic number.

It is not a de Polignac number, because 74936545 - 2⁷ = 74936417 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7493650 + ... + 7493659.

It is an arithmetic number, because the mean of its divisors is an integer number (22480965).

Almost surely, 2^74936545 is an apocalyptic number.

It is an amenable number.

74936545 is a deficient number, since it is larger than the sum of its proper divisors (14987315).

74936545 is a wasteful number, since it uses less digits than its factorization.

74936545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14987314.

The product of its digits is 453600, while the sum is 43.

The square root of 74936545 is about 8656.5896864758. The cubic root of 74936545 is about 421.5973657160.

The spelling of 74936545 in words is "seventy-four million, nine hundred thirty-six thousand, five hundred forty-five".