74991371 has 8 divisors (see below), whose sum is σ = 92297184. Its totient is φ = 59333760.

The previous prime is 74991307. The next prime is 74991383. The reversal of 74991371 is 17319947.

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 74991371 - 2⁶ = 74991307 is a prime.

It is a super-3 number, since 3×74991371³ (a number of 25 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (74991571) 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, 411950 + ... + 412131.

It is an arithmetic number, because the mean of its divisors is an integer number (11537148).

Almost surely, 2^74991371 is an apocalyptic number.

74991371 is a deficient number, since it is larger than the sum of its proper divisors (17305813).

74991371 is a wasteful number, since it uses less digits than its factorization.

74991371 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 824101.

The product of its digits is 47628, while the sum is 41.

The square root of 74991371 is about 8659.7558279665. The cubic root of 74991371 is about 421.7001587406.

The spelling of 74991371 in words is "seventy-four million, nine hundred ninety-one thousand, three hundred seventy-one".