74224631 has 6 divisors (see below), whose sum is σ = 80373600. Its totient is φ = 68514888.

The previous prime is 74224603. The next prime is 74224663. The reversal of 74224631 is 13642247.

It is a de Polignac number, because none of the positive numbers 2^k-74224631 is a prime.

It is a super-2 number, since 2×74224631² = 11018591694172322, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 74224594 and 74224603.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74224681) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 219431 + ... + 219768.

It is an arithmetic number, because the mean of its divisors is an integer number (13395600).

Almost surely, 2^74224631 is an apocalyptic number.

74224631 is a deficient number, since it is larger than the sum of its proper divisors (6148969).

74224631 is a wasteful number, since it uses less digits than its factorization.

74224631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 439225 (or 439212 counting only the distinct ones).

The product of its digits is 8064, while the sum is 29.

The square root of 74224631 is about 8615.3717853613. The cubic root of 74224631 is about 420.2580255019.

Adding to 74224631 its reverse (13642247), we get a palindrome (87866878).

The spelling of 74224631 in words is "seventy-four million, two hundred twenty-four thousand, six hundred thirty-one".