647715130 has 128 divisors (see below), whose sum is σ = 1369509120. Its totient is φ = 218972160.

The previous prime is 647715127. The next prime is 647715137. The reversal of 647715130 is 31517746.

It is a Harshad number since it is a multiple of its sum of digits (34).

It is not an unprimeable number, because it can be changed into a prime (647715137) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 8872774 + ... + 8872846.

It is an arithmetic number, because the mean of its divisors is an integer number (10699290).

Almost surely, 2^647715130 is an apocalyptic number.

647715130 is an abundant number, since it is smaller than the sum of its proper divisors (721793990).

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

647715130 is a wasteful number, since it uses less digits than its factorization.

647715130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 224.

The product of its (nonzero) digits is 17640, while the sum is 34.

The square root of 647715130 is about 25450.2481323857. The cubic root of 647715130 is about 865.2229169204. Note that the first 3 decimals are identical.

The spelling of 647715130 in words is "six hundred forty-seven million, seven hundred fifteen thousand, one hundred thirty".