74752891 has 4 divisors (see below), whose sum is σ = 74771512. Its totient is φ = 74734272.

The previous prime is 74752883. The next prime is 74752901. The reversal of 74752891 is 19825747.

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 74752891 - 2³ = 74752883 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (74752801) 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, 525 + ... + 12238.

It is an arithmetic number, because the mean of its divisors is an integer number (18692878).

Almost surely, 2^74752891 is an apocalyptic number.

74752891 is a deficient number, since it is larger than the sum of its proper divisors (18621).

74752891 is a wasteful number, since it uses less digits than its factorization.

74752891 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18620.

The product of its digits is 141120, while the sum is 43.

The square root of 74752891 is about 8645.9754221256. The cubic root of 74752891 is about 421.2526679353.

The spelling of 74752891 in words is "seventy-four million, seven hundred fifty-two thousand, eight hundred ninety-one".