74123661 has 8 divisors (see below), whose sum is σ = 98984160. Its totient is φ = 49339472.

The previous prime is 74123633. The next prime is 74123669. The reversal of 74123661 is 16632147.

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 74123661 - 2⁵ = 74123629 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74123669) 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, 16770 + ... + 20723.

It is an arithmetic number, because the mean of its divisors is an integer number (12373020).

Almost surely, 2^74123661 is an apocalyptic number.

It is an amenable number.

74123661 is a deficient number, since it is larger than the sum of its proper divisors (24860499).

74123661 is a wasteful number, since it uses less digits than its factorization.

74123661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38155.

The product of its digits is 6048, while the sum is 30.

The square root of 74123661 is about 8609.5099163657. The cubic root of 74123661 is about 420.0673758124.

The spelling of 74123661 in words is "seventy-four million, one hundred twenty-three thousand, six hundred sixty-one".