74244591 has 12 divisors (see below), whose sum is σ = 107800368. Its totient is φ = 49238784.

The previous prime is 74244523. The next prime is 74244641. The reversal of 74244591 is 19544247.

It is a happy number.

It is not a de Polignac number, because 74244591 - 2⁷ = 74244463 is a prime.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74244691) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 19635 + ... + 23108.

It is an arithmetic number, because the mean of its divisors is an integer number (8983364).

Almost surely, 2^74244591 is an apocalyptic number.

74244591 is a deficient number, since it is larger than the sum of its proper divisors (33555777).

74244591 is a wasteful number, since it uses less digits than its factorization.

74244591 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42942 (or 42939 counting only the distinct ones).

The product of its digits is 40320, while the sum is 36.

The square root of 74244591 is about 8616.5301020771. The cubic root of 74244591 is about 420.2956931345.

The spelling of 74244591 in words is "seventy-four million, two hundred forty-four thousand, five hundred ninety-one".