647477352 has 24 divisors (see below), whose sum is σ = 1753584690. Its totient is φ = 215825760.

The previous prime is 647477323. The next prime is 647477357. The reversal of 647477352 is 253774746.

647477352 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 517380516 + 130096836 = 22746^2 + 11406^2 .

It is a tau number, because it is divible by the number of its divisors (24).

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 647477298 and 647477307.

It is not an unprimeable number, because it can be changed into a prime (647477357) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4496299 + ... + 4496442.

Almost surely, 2^647477352 is an apocalyptic number.

It is an amenable number.

647477352 is an abundant number, since it is smaller than the sum of its proper divisors (1106107338).

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

647477352 is a wasteful number, since it uses less digits than its factorization.

647477352 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8992753 (or 8992746 counting only the distinct ones).

The product of its digits is 987840, while the sum is 45.

The square root of 647477352 is about 25445.5762756515. The cubic root of 647477352 is about 865.1170287271.

The spelling of 647477352 in words is "six hundred forty-seven million, four hundred seventy-seven thousand, three hundred fifty-two".