6314631640 has 64 divisors (see below), whose sum is σ = 15450328800. Its totient is φ = 2313013248.

The previous prime is 6314631637. The next prime is 6314631671. The reversal of 6314631640 is 461364136.

It is a Harshad number since it is a multiple of its sum of digits (34).

It is a junction number, because it is equal to n+sod(n) for n = 6314631596 and 6314631605.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 100330 + ... + 150649.

Almost surely, 2^6314631640 is an apocalyptic number.

It is an amenable number.

6314631640 is an abundant number, since it is smaller than the sum of its proper divisors (9135697160).

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

6314631640 is a wasteful number, since it uses less digits than its factorization.

6314631640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 251044 (or 251040 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 34.

The square root of 6314631640 is about 79464.6565461652. The cubic root of 6314631640 is about 1848.3434540583.

Adding to 6314631640 its reverse (461364136), we get a palindrome (6775995776).

The spelling of 6314631640 in words is "six billion, three hundred fourteen million, six hundred thirty-one thousand, six hundred forty".