647384160 has 192 divisors, whose sum is σ = 2126960640. Its totient is φ = 165335040.

The previous prime is 647384159. The next prime is 647384161. The reversal of 647384160 is 61483746.

It is an interprime number because it is at equal distance from previous prime (647384159) and next prime (647384161).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (647384161) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2068164 + ... + 2068476.

It is an arithmetic number, because the mean of its divisors is an integer number (11077920).

Almost surely, 2^647384160 is an apocalyptic number.

647384160 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 647384160, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1063480320).

647384160 is an abundant number, since it is smaller than the sum of its proper divisors (1479576480).

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

647384160 is a wasteful number, since it uses less digits than its factorization.

647384160 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 501 (or 493 counting only the distinct ones).

The product of its (nonzero) digits is 96768, while the sum is 39.

The square root of 647384160 is about 25443.7450073687. The cubic root of 647384160 is about 865.0755210439.

The spelling of 647384160 in words is "six hundred forty-seven million, three hundred eighty-four thousand, one hundred sixty".