6408861400 has 24 divisors (see below), whose sum is σ = 14900603220. Its totient is φ = 2563544480.

The previous prime is 6408861397. The next prime is 6408861421. The reversal of 6408861400 is 41688046.

It is a self number, because there is not a number n which added to its sum of digits gives 6408861400.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 16021954 + ... + 16022353.

Almost surely, 2^6408861400 is an apocalyptic number.

It is an amenable number.

6408861400 is an abundant number, since it is smaller than the sum of its proper divisors (8491741820).

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

6408861400 is a wasteful number, since it uses less digits than its factorization.

6408861400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32044323 (or 32044314 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 37.

The square root of 6408861400 is about 80055.3645922620. The cubic root of 6408861400 is about 1857.4920335836.

The spelling of 6408861400 in words is "six billion, four hundred eight million, eight hundred sixty-one thousand, four hundred".