374445721 has 8 divisors (see below), whose sum is σ = 403560584. Its totient is φ = 345375360.

The previous prime is 374445713. The next prime is 374445733. The reversal of 374445721 is 127544473.

It can be written as a sum of positive squares in 4 ways, for example, as 83265625 + 291180096 = 9125^2 + 17064^2 .

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 374445721 - 2³ = 374445713 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (374445761) 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, 7525 + ... + 28381.

It is an arithmetic number, because the mean of its divisors is an integer number (50445073).

Almost surely, 2^374445721 is an apocalyptic number.

It is an amenable number.

374445721 is a deficient number, since it is larger than the sum of its proper divisors (29114863).

374445721 is a wasteful number, since it uses less digits than its factorization.

374445721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22251.

The product of its digits is 94080, while the sum is 37.

The square root of 374445721 is about 19350.6000165370. The cubic root of 374445721 is about 720.7693172266.

The spelling of 374445721 in words is "three hundred seventy-four million, four hundred forty-five thousand, seven hundred twenty-one".