643130662 has 16 divisors (see below), whose sum is σ = 971268480. Its totient is φ = 319381632.

The previous prime is 643130627. The next prime is 643130671. The reversal of 643130662 is 266031346.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 225598 + ... + 228430.

It is an arithmetic number, because the mean of its divisors is an integer number (60704280).

Almost surely, 2^643130662 is an apocalyptic number.

643130662 is a deficient number, since it is larger than the sum of its proper divisors (328137818).

643130662 is a wasteful number, since it uses less digits than its factorization.

643130662 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3567.

The product of its (nonzero) digits is 15552, while the sum is 31.

The square root of 643130662 is about 25360.0209384772. The cubic root of 643130662 is about 863.1767591044.

The spelling of 643130662 in words is "six hundred forty-three million, one hundred thirty thousand, six hundred sixty-two".