74344631 has 4 divisors (see below), whose sum is σ = 74365200. Its totient is φ = 74324064.

The previous prime is 74344591. The next prime is 74344643. The reversal of 74344631 is 13644347.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-74344631 is a prime.

It is a super-2 number, since 2×74344631² = 11054248317052322, 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 (74344651) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3266 + ... + 12623.

It is an arithmetic number, because the mean of its divisors is an integer number (18591300).

Almost surely, 2^74344631 is an apocalyptic number.

74344631 is a deficient number, since it is larger than the sum of its proper divisors (20569).

74344631 is a wasteful number, since it uses less digits than its factorization.

74344631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20568.

The product of its digits is 24192, while the sum is 32.

The square root of 74344631 is about 8622.3332689012. Note that the first 3 decimals coincide. The cubic root of 74344631 is about 420.4843825718.

Adding to 74344631 its reverse (13644347), we get a palindrome (87988978).

The spelling of 74344631 in words is "seventy-four million, three hundred forty-four thousand, six hundred thirty-one".