372645721 has 8 divisors (see below), whose sum is σ = 426271040. Its totient is φ = 319117968.

The previous prime is 372645709. The next prime is 372645733. The reversal of 372645721 is 127546273.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (372645709) and next prime (372645733).

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 372645721 - 2⁹ = 372645209 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (372645781) 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, 16011 + ... + 31648.

It is an arithmetic number, because the mean of its divisors is an integer number (53283880).

Almost surely, 2^372645721 is an apocalyptic number.

It is an amenable number.

372645721 is a deficient number, since it is larger than the sum of its proper divisors (53625319).

372645721 is a wasteful number, since it uses less digits than its factorization.

372645721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48783.

The product of its digits is 70560, while the sum is 37.

The square root of 372645721 is about 19304.0338012551. The cubic root of 372645721 is about 719.6125236370.

The spelling of 372645721 in words is "three hundred seventy-two million, six hundred forty-five thousand, seven hundred twenty-one".