647546536 has 64 divisors (see below), whose sum is σ = 1502484480. Its totient is φ = 254776320.

The previous prime is 647546519. The next prime is 647546561. The reversal of 647546536 is 635645746.

It is a hoax number, since the sum of its digits (46) coincides with the sum of the digits of its distinct prime factors.

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, 136720 + ... + 141376.

It is an arithmetic number, because the mean of its divisors is an integer number (23476320).

Almost surely, 2^647546536 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 647546536, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (751242240).

647546536 is an abundant number, since it is smaller than the sum of its proper divisors (854937944).

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

647546536 is a wasteful number, since it uses less digits than its factorization.

647546536 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4874 (or 4870 counting only the distinct ones).

The product of its digits is 1814400, while the sum is 46.

The square root of 647546536 is about 25446.9356897839. The cubic root of 647546536 is about 865.1478406799.

The spelling of 647546536 in words is "six hundred forty-seven million, five hundred forty-six thousand, five hundred thirty-six".