74505631 has 8 divisors (see below), whose sum is σ = 78644720. Its totient is φ = 70388352.

The previous prime is 74505623. The next prime is 74505637. The reversal of 74505631 is 13650547.

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 74505631 - 2³ = 74505623 is a prime.

It is a super-2 number, since 2×74505631² = 11102178101416322, 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 = 74505593 and 74505602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74505637) 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, 1831 + ... + 12343.

It is an arithmetic number, because the mean of its divisors is an integer number (9830590).

Almost surely, 2^74505631 is an apocalyptic number.

74505631 is a deficient number, since it is larger than the sum of its proper divisors (4139089).

74505631 is a wasteful number, since it uses less digits than its factorization.

74505631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10905.

The product of its (nonzero) digits is 12600, while the sum is 31.

The square root of 74505631 is about 8631.6644397242. The cubic root of 74505631 is about 420.7876960041.

The spelling of 74505631 in words is "seventy-four million, five hundred five thousand, six hundred thirty-one".