74481791 has 4 divisors (see below), whose sum is σ = 74508672. Its totient is φ = 74454912.

The previous prime is 74481779. The next prime is 74481821. The reversal of 74481791 is 19718447.

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 74481791 - 2⁶ = 74481727 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74481731) 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, 8735 + ... + 15008.

It is an arithmetic number, because the mean of its divisors is an integer number (18627168).

Almost surely, 2^74481791 is an apocalyptic number.

74481791 is a deficient number, since it is larger than the sum of its proper divisors (26881).

74481791 is a wasteful number, since it uses less digits than its factorization.

74481791 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26880.

The product of its digits is 56448, while the sum is 41.

The square root of 74481791 is about 8630.2833673061. The cubic root of 74481791 is about 420.7428105877.

The spelling of 74481791 in words is "seventy-four million, four hundred eighty-one thousand, seven hundred ninety-one".