6370740721 has 8 divisors (see below), whose sum is σ = 6650964864. Its totient is φ = 6090786240.

The previous prime is 6370740707. The next prime is 6370740749. The reversal of 6370740721 is 1270470736.

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 6370740721 - 2⁹ = 6370740209 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6370740521) 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, 18360 + ... + 114361.

It is an arithmetic number, because the mean of its divisors is an integer number (831370608).

Almost surely, 2^6370740721 is an apocalyptic number.

It is an amenable number.

6370740721 is a deficient number, since it is larger than the sum of its proper divisors (280224143).

6370740721 is a wasteful number, since it uses less digits than its factorization.

6370740721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 134831.

The product of its (nonzero) digits is 49392, while the sum is 37.

The square root of 6370740721 is about 79816.9200169989. The cubic root of 6370740721 is about 1853.8018452589.

The spelling of 6370740721 in words is "six billion, three hundred seventy million, seven hundred forty thousand, seven hundred twenty-one".