74865631 has 8 divisors (see below), whose sum is σ = 77994000. Its totient is φ = 71799360.

The previous prime is 74865629. The next prime is 74865673. The reversal of 74865631 is 13656847.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 74865631 - 2¹ = 74865629 is a prime.

It is a super-2 number, since 2×74865631² = 11209725410056322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74865601) 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, 13056 + ... + 17893.

It is an arithmetic number, because the mean of its divisors is an integer number (9749250).

Almost surely, 2^74865631 is an apocalyptic number.

74865631 is a deficient number, since it is larger than the sum of its proper divisors (3128369).

74865631 is a wasteful number, since it uses less digits than its factorization.

74865631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31049.

The product of its digits is 120960, while the sum is 40.

The square root of 74865631 is about 8652.4927622044. The cubic root of 74865631 is about 421.4643349795.

The spelling of 74865631 in words is "seventy-four million, eight hundred sixty-five thousand, six hundred thirty-one".