646081032 has 32 divisors (see below), whose sum is σ = 1618958880. Its totient is φ = 214859520.

The previous prime is 646081031. The next prime is 646081049. The reversal of 646081032 is 230180646.

It is not an unprimeable number, because it can be changed into a prime (646081031) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20694 + ... + 41477.

It is an arithmetic number, because the mean of its divisors is an integer number (50592465).

Almost surely, 2^646081032 is an apocalyptic number.

It is an amenable number.

646081032 is an abundant number, since it is smaller than the sum of its proper divisors (972877848).

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

646081032 is a wasteful number, since it uses less digits than its factorization.

646081032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62613 (or 62609 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 30.

The square root of 646081032 is about 25418.1240849910. The cubic root of 646081032 is about 864.4946905578.

The spelling of 646081032 in words is "six hundred forty-six million, eighty-one thousand, thirty-two".