6313640 has 16 divisors (see below), whose sum is σ = 14205780. Its totient is φ = 2525440.

The previous prime is 6313639. The next prime is 6313669. The reversal of 6313640 is 463136.

It can be written as a sum of positive squares in 2 ways, for example, as 5317636 + 996004 = 2306^2 + 998^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 78881 + ... + 78960.

Almost surely, 2^6313640 is an apocalyptic number.

It is an amenable number.

6313640 is an abundant number, since it is smaller than the sum of its proper divisors (7892140).

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

6313640 is a wasteful number, since it uses less digits than its factorization.

6313640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 157852 (or 157848 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 23.

The square root of 6313640 is about 2512.6957635177. The cubic root of 6313640 is about 184.8246695326.

Adding to 6313640 its reverse (463136), we get a palindrome (6776776).

The spelling of 6313640 in words is "six million, three hundred thirteen thousand, six hundred forty".