647432352 has 240 divisors, whose sum is σ = 2305195200. Its totient is φ = 174016512.

The previous prime is 647432351. The next prime is 647432363. The reversal of 647432352 is 253234746.

647432352 is a `hidden beast` number, since 647 + 4 + 3 + 2 + 3 + 5 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (647432351) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 307399 + ... + 309497.

It is an arithmetic number, because the mean of its divisors is an integer number (9604980).

Almost surely, 2^647432352 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 647432352, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1152597600).

647432352 is an abundant number, since it is smaller than the sum of its proper divisors (1657762848).

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

647432352 is a wasteful number, since it uses less digits than its factorization.

647432352 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2145 (or 2128 counting only the distinct ones).

The product of its digits is 120960, while the sum is 36.

The square root of 647432352 is about 25444.6920201444. The cubic root of 647432352 is about 865.0969862406.

The spelling of 647432352 in words is "six hundred forty-seven million, four hundred thirty-two thousand, three hundred fifty-two".