647670352 has 80 divisors (see below), whose sum is σ = 1567613952. Its totient is φ = 252794880.

The previous prime is 647670349. The next prime is 647670371. The reversal of 647670352 is 253076746.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 53538 + ... + 64510.

Almost surely, 2^647670352 is an apocalyptic number.

647670352 is a gapful number since it is divisible by the number (62) 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 647670352, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (783806976).

647670352 is an abundant number, since it is smaller than the sum of its proper divisors (919943600).

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

647670352 is a wasteful number, since it uses less digits than its factorization.

647670352 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11036 (or 11030 counting only the distinct ones).

The product of its (nonzero) digits is 211680, while the sum is 40.

The square root of 647670352 is about 25449.3684008071. The cubic root of 647670352 is about 865.2029781938.

The spelling of 647670352 in words is "six hundred forty-seven million, six hundred seventy thousand, three hundred fifty-two".