74569513 has 2 divisors, whose sum is σ = 74569514. Its totient is φ = 74569512.

The previous prime is 74569487. The next prime is 74569549. The reversal of 74569513 is 31596547.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 73136704 + 1432809 = 8552^2 + 1197^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-74569513 is a prime.

It is a super-2 number, since 2×74569513² = 11121224538114338, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (74567513) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37284756 + 37284757.

It is an arithmetic number, because the mean of its divisors is an integer number (37284757).

Almost surely, 2^74569513 is an apocalyptic number.

It is an amenable number.

74569513 is a deficient number, since it is larger than the sum of its proper divisors (1).

74569513 is an equidigital number, since it uses as much as digits as its factorization.

74569513 is an evil number, because the sum of its binary digits is even.

The product of its digits is 113400, while the sum is 40.

The square root of 74569513 is about 8635.3640919188. The cubic root of 74569513 is about 420.9079244140.

The spelling of 74569513 in words is "seventy-four million, five hundred sixty-nine thousand, five hundred thirteen".