74860891 has 4 divisors (see below), whose sum is σ = 85555312. Its totient is φ = 64166472.

The previous prime is 74860889. The next prime is 74860921. The reversal of 74860891 is 19806847.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 19806847 = 281 ⋅70487.

It is a cyclic number.

It is not a de Polignac number, because 74860891 - 2¹ = 74860889 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (74860811) 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, 5347200 + ... + 5347213.

It is an arithmetic number, because the mean of its divisors is an integer number (21388828).

Almost surely, 2^74860891 is an apocalyptic number.

74860891 is a deficient number, since it is larger than the sum of its proper divisors (10694421).

74860891 is a wasteful number, since it uses less digits than its factorization.

74860891 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10694420.

The product of its (nonzero) digits is 96768, while the sum is 43.

The square root of 74860891 is about 8652.2188483649. The cubic root of 74860891 is about 421.4554400073.

The spelling of 74860891 in words is "seventy-four million, eight hundred sixty thousand, eight hundred ninety-one".