74431601 has 4 divisors (see below), whose sum is σ = 74847600. Its totient is φ = 74015604.

The previous prime is 74431549. The next prime is 74431613. The reversal of 74431601 is 10613447.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 74431601 - 2¹⁴ = 74415217 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (74431681) 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, 207731 + ... + 208088.

It is an arithmetic number, because the mean of its divisors is an integer number (18711900).

Almost surely, 2^74431601 is an apocalyptic number.

It is an amenable number.

74431601 is a deficient number, since it is larger than the sum of its proper divisors (415999).

74431601 is a wasteful number, since it uses less digits than its factorization.

74431601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 415998.

The product of its (nonzero) digits is 2016, while the sum is 26.

The square root of 74431601 is about 8627.3750932714. The cubic root of 74431601 is about 420.6482826660.

The spelling of 74431601 in words is "seventy-four million, four hundred thirty-one thousand, six hundred one".