647662230 has 80 divisors (see below), whose sum is σ = 1797738624. Its totient is φ = 167132160.

The previous prime is 647662217. The next prime is 647662237. The reversal of 647662230 is 32266746.

It is a happy number.

647662230 is a `hidden beast` number, since 647 + 6 + 6 + 2 + 2 + 3 + 0 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (647662237) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 12214 + ... + 38006.

Almost surely, 2^647662230 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 647662230, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (898869312).

647662230 is an abundant number, since it is smaller than the sum of its proper divisors (1150076394).

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

647662230 is a wasteful number, since it uses less digits than its factorization.

647662230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25843 (or 25834 counting only the distinct ones).

The product of its (nonzero) digits is 72576, while the sum is 36.

The square root of 647662230 is about 25449.2088285668. The cubic root of 647662230 is about 865.1993615351.

The spelling of 647662230 in words is "six hundred forty-seven million, six hundred sixty-two thousand, two hundred thirty".