646126032 has 40 divisors (see below), whose sum is σ = 1726719840. Its totient is φ = 207948160.

The previous prime is 646126031. The next prime is 646126037. The reversal of 646126032 is 230621646.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (646126031) 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, 230694 + ... + 233477.

It is an arithmetic number, because the mean of its divisors is an integer number (43167996).

Almost surely, 2^646126032 is an apocalyptic number.

It is an amenable number.

646126032 is an abundant number, since it is smaller than the sum of its proper divisors (1080593808).

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

646126032 is a wasteful number, since it uses less digits than its factorization.

646126032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 464211 (or 464205 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 30.

The square root of 646126032 is about 25419.0092647216. The cubic root of 646126032 is about 864.5147609804.

Adding to 646126032 its reverse (230621646), we get a palindrome (876747678).

The spelling of 646126032 in words is "six hundred forty-six million, one hundred twenty-six thousand, thirty-two".