74744669 has 4 divisors (see below), whose sum is σ = 74819040. Its totient is φ = 74670300.

The previous prime is 74744653. The next prime is 74744671. The reversal of 74744669 is 96644747.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 96644747 = 857 ⋅112771.

It is a cyclic number.

It is not a de Polignac number, because 74744669 - 2⁴ = 74744653 is a prime.

It is a super-2 number, since 2×74744669² = 11173531087839122, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74744269) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35657 + ... + 37694.

It is an arithmetic number, because the mean of its divisors is an integer number (18704760).

Almost surely, 2^74744669 is an apocalyptic number.

It is an amenable number.

74744669 is a deficient number, since it is larger than the sum of its proper divisors (74371).

74744669 is a wasteful number, since it uses less digits than its factorization.

74744669 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74370.

The product of its digits is 1016064, while the sum is 47.

The square root of 74744669 is about 8645.4999277081. The cubic root of 74744669 is about 421.2372229745.

The spelling of 74744669 in words is "seventy-four million, seven hundred forty-four thousand, six hundred sixty-nine".