649031032 has 96 divisors (see below), whose sum is σ = 1471251600. Its totient is φ = 265171968.

The previous prime is 649031003. The next prime is 649031063. The reversal of 649031032 is 230130946.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4669219 + ... + 4669357.

Almost surely, 2^649031032 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 649031032, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (735625800).

649031032 is an abundant number, since it is smaller than the sum of its proper divisors (822220568).

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

649031032 is a wasteful number, since it uses less digits than its factorization.

649031032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 333 (or 190 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 28.

The square root of 649031032 is about 25476.0874547094. The cubic root of 649031032 is about 865.8084512887.

Adding to 649031032 its reverse (230130946), we get a palindrome (879161978).

The spelling of 649031032 in words is "six hundred forty-nine million, thirty-one thousand, thirty-two".