74878231 has 4 divisors (see below), whose sum is σ = 74989512. Its totient is φ = 74766952.

The previous prime is 74878229. The next prime is 74878247. The reversal of 74878231 is 13287847.

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

It is a cyclic number.

It is not a de Polignac number, because 74878231 - 2¹ = 74878229 is a prime.

It is a super-2 number, since 2×74878231² = 11213498955378722, 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 (74878211) 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, 54625 + ... + 55978.

It is an arithmetic number, because the mean of its divisors is an integer number (18747378).

Almost surely, 2^74878231 is an apocalyptic number.

74878231 is a deficient number, since it is larger than the sum of its proper divisors (111281).

74878231 is a wasteful number, since it uses less digits than its factorization.

74878231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111280.

The product of its digits is 75264, while the sum is 40.

The square root of 74878231 is about 8653.2208454425. The cubic root of 74878231 is about 421.4879780168.

The spelling of 74878231 in words is "seventy-four million, eight hundred seventy-eight thousand, two hundred thirty-one".