74574991 has 8 divisors (see below), whose sum is σ = 75487104. Its totient is φ = 73668480.

The previous prime is 74574989. The next prime is 74575003. The reversal of 74574991 is 19947547.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 74574991 - 2¹ = 74574989 is a prime.

It is a super-2 number, since 2×74574991² = 11122858565300162, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74574911) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29331 + ... + 31771.

It is an arithmetic number, because the mean of its divisors is an integer number (9435888).

Almost surely, 2^74574991 is an apocalyptic number.

74574991 is a deficient number, since it is larger than the sum of its proper divisors (912113).

74574991 is a wasteful number, since it uses less digits than its factorization.

74574991 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2801.

The product of its digits is 317520, while the sum is 46.

The square root of 74574991 is about 8635.6812701720. The cubic root of 74574991 is about 420.9182310262.

The spelling of 74574991 in words is "seventy-four million, five hundred seventy-four thousand, nine hundred ninety-one".