6644631032 has 64 divisors (see below), whose sum is σ = 13918716000. Its totient is φ = 2952681984.

The previous prime is 6644631031. The next prime is 6644631079. The reversal of 6644631032 is 2301364466.

It is a super-2 number, since 2×6644631032² = 88302243102834770048, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 6644630983 and 6644631001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6644631031) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1140158 + ... + 1145970.

Almost surely, 2^6644631032 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 6644631032, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6959358000).

6644631032 is an abundant number, since it is smaller than the sum of its proper divisors (7274084968).

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

6644631032 is a wasteful number, since it uses less digits than its factorization.

6644631032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6240 (or 6236 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 35.

The square root of 6644631032 is about 81514.6062494324. The cubic root of 6644631032 is about 1879.9961362528.

Adding to 6644631032 its reverse (2301364466), we get a palindrome (8945995498).

The spelling of 6644631032 in words is "six billion, six hundred forty-four million, six hundred thirty-one thousand, thirty-two".