6658722270 has 24 divisors (see below), whose sum is σ = 17312678136. Its totient is φ = 1775659248.

The previous prime is 6658722253. The next prime is 6658722319. The reversal of 6658722270 is 722278566.

6658722270 is a `hidden beast` number, since 66 + 587 + 2 + 2 + 2 + 7 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 36992812 + ... + 36992991.

It is an arithmetic number, because the mean of its divisors is an integer number (721361589).

Almost surely, 2^6658722270 is an apocalyptic number.

6658722270 is an abundant number, since it is smaller than the sum of its proper divisors (10653955866).

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

6658722270 is a wasteful number, since it uses less digits than its factorization.

6658722270 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73985816 (or 73985813 counting only the distinct ones).

The product of its (nonzero) digits is 564480, while the sum is 45.

The square root of 6658722270 is about 81600.9942954128. The cubic root of 6658722270 is about 1881.3241642561.

The spelling of 6658722270 in words is "six billion, six hundred fifty-eight million, seven hundred twenty-two thousand, two hundred seventy".