350672721 has 32 divisors (see below), whose sum is σ = 566860800. Its totient is φ = 188360640.

The previous prime is 350672711. The next prime is 350672723. The reversal of 350672721 is 127276053.

It is not a de Polignac number, because 350672721 - 2⁶ = 350672657 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (350672723) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 48915 + ... + 55623.

It is an arithmetic number, because the mean of its divisors is an integer number (17714400).

Almost surely, 2^350672721 is an apocalyptic number.

It is an amenable number.

350672721 is a deficient number, since it is larger than the sum of its proper divisors (216188079).

350672721 is a wasteful number, since it uses less digits than its factorization.

350672721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6869.

The product of its (nonzero) digits is 17640, while the sum is 33.

The square root of 350672721 is about 18726.2575278671. The cubic root of 350672721 is about 705.1810952713.

The spelling of 350672721 in words is "three hundred fifty million, six hundred seventy-two thousand, seven hundred twenty-one".