74461991 has 8 divisors (see below), whose sum is σ = 75794160. Its totient is φ = 73136448.

The previous prime is 74461967. The next prime is 74461997. The reversal of 74461991 is 19916447.

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 74461991 - 2⁶ = 74461927 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 (74461997) 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, 24635 + ... + 27491.

It is an arithmetic number, because the mean of its divisors is an integer number (9474270).

Almost surely, 2^74461991 is an apocalyptic number.

74461991 is a deficient number, since it is larger than the sum of its proper divisors (1332169).

74461991 is a wasteful number, since it uses less digits than its factorization.

74461991 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3313.

The product of its digits is 54432, while the sum is 41.

The square root of 74461991 is about 8629.1361676590. The cubic root of 74461991 is about 420.7055243112.

The spelling of 74461991 in words is "seventy-four million, four hundred sixty-one thousand, nine hundred ninety-one".