74581091 has 16 divisors (see below), whose sum is σ = 87127488. Its totient is φ = 63206400.

The previous prime is 74581081. The next prime is 74581093. The reversal of 74581091 is 19018547.

It is a cyclic number.

It is not a de Polignac number, because 74581091 - 2¹⁰ = 74580067 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (74581093) 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, 4946 + ... + 13176.

It is an arithmetic number, because the mean of its divisors is an integer number (5445468).

Almost surely, 2^74581091 is an apocalyptic number.

74581091 is a deficient number, since it is larger than the sum of its proper divisors (12546397).

74581091 is a wasteful number, since it uses less digits than its factorization.

74581091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8302.

The product of its (nonzero) digits is 10080, while the sum is 35.

The square root of 74581091 is about 8636.0344487502. The cubic root of 74581091 is about 420.9297073096.

The spelling of 74581091 in words is "seventy-four million, five hundred eighty-one thousand, ninety-one".