74395669 has 2 divisors, whose sum is σ = 74395670. Its totient is φ = 74395668.

The previous prime is 74395667. The next prime is 74395679. The reversal of 74395669 is 96659347.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 53802225 + 20593444 = 7335^2 + 4538^2 .

It is a cyclic number.

It is not a de Polignac number, because 74395669 - 2¹ = 74395667 is a prime.

It is a super-2 number, since 2×74395669² = 11069431131915122, which contains 22 as substring.

Together with 74395667, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (74395663) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37197834 + 37197835.

It is an arithmetic number, because the mean of its divisors is an integer number (37197835).

Almost surely, 2^74395669 is an apocalyptic number.

It is an amenable number.

74395669 is a deficient number, since it is larger than the sum of its proper divisors (1).

74395669 is an equidigital number, since it uses as much as digits as its factorization.

74395669 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 74395669 is about 8625.2924008407. The cubic root of 74395669 is about 420.5805821787.

The spelling of 74395669 in words is "seventy-four million, three hundred ninety-five thousand, six hundred sixty-nine".