6320643540 has 48 divisors (see below), whose sum is σ = 17707878720. Its totient is φ = 1684545280.

The previous prime is 6320643533. The next prime is 6320643559. The reversal of 6320643540 is 453460236.

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, 79576 + ... + 137744.

It is an arithmetic number, because the mean of its divisors is an integer number (368914140).

Almost surely, 2^6320643540 is an apocalyptic number.

6320643540 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

6320643540 is an abundant number, since it is smaller than the sum of its proper divisors (11387235180).

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

6320643540 is a wasteful number, since it uses less digits than its factorization.

6320643540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59992 (or 59990 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 33.

The square root of 6320643540 is about 79502.4750558119. The cubic root of 6320643540 is about 1848.9298451611.

The spelling of 6320643540 in words is "six billion, three hundred twenty million, six hundred forty-three thousand, five hundred forty".