6658434894 has 32 divisors (see below), whose sum is σ = 13502845440. Its totient is φ = 2188555200.

The previous prime is 6658434847. The next prime is 6658434907. The reversal of 6658434894 is 4984348566.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 375754 + ... + 393074.

It is an arithmetic number, because the mean of its divisors is an integer number (421963920).

Almost surely, 2^6658434894 is an apocalyptic number.

6658434894 is an abundant number, since it is smaller than the sum of its proper divisors (6844410546).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6658434894 is a wasteful number, since it uses less digits than its factorization.

6658434894 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18216.

The product of its digits is 19906560, while the sum is 57.

The square root of 6658434894 is about 81599.2334155168. The cubic root of 6658434894 is about 1881.2970992443.

The spelling of 6658434894 in words is "six billion, six hundred fifty-eight million, four hundred thirty-four thousand, eight hundred ninety-four".