74152991 has 8 divisors (see below), whose sum is σ = 85152000. Its totient is φ = 63863640.

The previous prime is 74152951. The next prime is 74152999. The reversal of 74152991 is 19925147.

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 74152991 - 2¹⁴ = 74136607 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 (74152999) 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, 177191 + ... + 177608.

It is an arithmetic number, because the mean of its divisors is an integer number (10644000).

Almost surely, 2^74152991 is an apocalyptic number.

74152991 is a deficient number, since it is larger than the sum of its proper divisors (10999009).

74152991 is a wasteful number, since it uses less digits than its factorization.

74152991 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 354829.

The product of its digits is 22680, while the sum is 38.

The square root of 74152991 is about 8611.2130968871. The cubic root of 74152991 is about 420.1227740091.

The spelling of 74152991 in words is "seventy-four million, one hundred fifty-two thousand, nine hundred ninety-one".