74456891 has 16 divisors (see below), whose sum is σ = 79198560. Its totient is φ = 69888000.

The previous prime is 74456881. The next prime is 74456903. The reversal of 74456891 is 19865447.

It is a cyclic number.

It is not a de Polignac number, because 74456891 - 2⁶ = 74456827 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (74456881) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 296516 + ... + 296766.

It is an arithmetic number, because the mean of its divisors is an integer number (4949910).

Almost surely, 2^74456891 is an apocalyptic number.

74456891 is a deficient number, since it is larger than the sum of its proper divisors (4741669).

74456891 is a wasteful number, since it uses less digits than its factorization.

74456891 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 526.

The product of its digits is 241920, while the sum is 44.

The square root of 74456891 is about 8628.8406521386. The cubic root of 74456891 is about 420.6959191998.

The spelling of 74456891 in words is "seventy-four million, four hundred fifty-six thousand, eight hundred ninety-one".