74635513 has 4 divisors (see below), whose sum is σ = 75859108. Its totient is φ = 73411920.

The previous prime is 74635459. The next prime is 74635523. The reversal of 74635513 is 31553647.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 12981609 + 61653904 = 3603^2 + 7852^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-74635513 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (74635523) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 611706 + ... + 611827.

It is an arithmetic number, because the mean of its divisors is an integer number (18964777).

Almost surely, 2^74635513 is an apocalyptic number.

It is an amenable number.

74635513 is a deficient number, since it is larger than the sum of its proper divisors (1223595).

74635513 is a wasteful number, since it uses less digits than its factorization.

74635513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1223594.

The product of its digits is 37800, while the sum is 34.

The square root of 74635513 is about 8639.1847416293. The cubic root of 74635513 is about 421.0320668868.

The spelling of 74635513 in words is "seventy-four million, six hundred thirty-five thousand, five hundred thirteen".