646060032 has 72 divisors (see below), whose sum is σ = 1865993220. Its totient is φ = 215347200.

The previous prime is 646060013. The next prime is 646060069. The reversal of 646060032 is 230060646.

It is a tau number, because it is divible by the number of its divisors (72).

It is a junction number, because it is equal to n+sod(n) for n = 646059978 and 646060005.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 907 + ... + 35957.

Almost surely, 2^646060032 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 646060032, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (932996610).

646060032 is an abundant number, since it is smaller than the sum of its proper divisors (1219933188).

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

646060032 is a wasteful number, since it uses less digits than its factorization.

646060032 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35079 (or 35056 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 27.

The square root of 646060032 is about 25417.7109905672. The cubic root of 646060032 is about 864.4853240417.

The spelling of 646060032 in words is "six hundred forty-six million, sixty thousand, thirty-two".