6342630921 has 24 divisors (see below), whose sum is σ = 10163855520. Its totient is φ = 3778862400.

The previous prime is 6342630913. The next prime is 6342630947. The reversal of 6342630921 is 1290362436.

6342630921 is a `hidden beast` number, since 6 + 342 + 6 + 309 + 2 + 1 = 666.

It is not a de Polignac number, because 6342630921 - 2³ = 6342630913 is a prime.

It is not an unprimeable number, because it can be changed into a prime (6342630961) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 537100 + ... + 548781.

It is an arithmetic number, because the mean of its divisors is an integer number (423493980).

Almost surely, 2^6342630921 is an apocalyptic number.

It is an amenable number.

6342630921 is a deficient number, since it is larger than the sum of its proper divisors (3821224599).

6342630921 is a wasteful number, since it uses less digits than its factorization.

6342630921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1085957 (or 1085954 counting only the distinct ones).

The product of its (nonzero) digits is 46656, while the sum is 36.

The square root of 6342630921 is about 79640.6361162441. The cubic root of 6342630921 is about 1851.0712977991.

The spelling of 6342630921 in words is "six billion, three hundred forty-two million, six hundred thirty thousand, nine hundred twenty-one".