74635689 has 8 divisors (see below), whose sum is σ = 99786880. Its totient is φ = 49620816.

The previous prime is 74635681. The next prime is 74635747. The reversal of 74635689 is 98653647.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 74635689 - 2³ = 74635681 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (74635681) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32794 + ... + 34995.

It is an arithmetic number, because the mean of its divisors is an integer number (12473360).

Almost surely, 2^74635689 is an apocalyptic number.

It is an amenable number.

74635689 is a deficient number, since it is larger than the sum of its proper divisors (25151191).

74635689 is a wasteful number, since it uses less digits than its factorization.

74635689 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68159.

The product of its digits is 1088640, while the sum is 48.

The square root of 74635689 is about 8639.1949277696. The cubic root of 74635689 is about 421.0323978355.

The spelling of 74635689 in words is "seventy-four million, six hundred thirty-five thousand, six hundred eighty-nine".