6356894720 has 264 divisors, whose sum is σ = 17354367744. Its totient is φ = 2230272000.

The previous prime is 6356894707. The next prime is 6356894773. The reversal of 6356894720 is 274986536.

It is a happy number.

It is a super-2 number, since 2×6356894720² = 80820220962327756800, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 19204955 + ... + 19205285.

Almost surely, 2^6356894720 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 6356894720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8677183872).

6356894720 is an abundant number, since it is smaller than the sum of its proper divisors (10997473024).

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

6356894720 is a wasteful number, since it uses less digits than its factorization.

6356894720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 409 (or 380 counting only the distinct ones).

The product of its (nonzero) digits is 2177280, while the sum is 50.

The square root of 6356894720 is about 79730.1368367069. The cubic root of 6356894720 is about 1852.4578696778.

The spelling of 6356894720 in words is "six billion, three hundred fifty-six million, eight hundred ninety-four thousand, seven hundred twenty".