74936569 has 2 divisors, whose sum is σ = 74936570. Its totient is φ = 74936568.

The previous prime is 74936567. The next prime is 74936591. The reversal of 74936569 is 96563947.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 70476025 + 4460544 = 8395^2 + 2112^2 .

It is a cyclic number.

It is not a de Polignac number, because 74936569 - 2¹ = 74936567 is a prime.

It is a super-2 number, since 2×74936569² = 11230978746983522, which contains 22 as substring.

Together with 74936567, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (74936567) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37468284 + 37468285.

It is an arithmetic number, because the mean of its divisors is an integer number (37468285).

Almost surely, 2^74936569 is an apocalyptic number.

It is an amenable number.

74936569 is a deficient number, since it is larger than the sum of its proper divisors (1).

74936569 is an equidigital number, since it uses as much as digits as its factorization.

74936569 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1224720, while the sum is 49.

The square root of 74936569 is about 8656.5910727029. The cubic root of 74936569 is about 421.5974107244.

The spelling of 74936569 in words is "seventy-four million, nine hundred thirty-six thousand, five hundred sixty-nine".