6291249568 has 24 divisors (see below), whose sum is σ = 13114480932. Its totient is φ = 2960587776.

The previous prime is 6291249557. The next prime is 6291249583. The reversal of 6291249568 is 8659421926.

It can be written as a sum of positive squares in 2 ways, for example, as 6176073744 + 115175824 = 78588^2 + 10732^2 .

It is a super-2 number, since 2×6291249568² = 79159642253720373248, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5781855 + ... + 5782942.

Almost surely, 2^6291249568 is an apocalyptic number.

6291249568 is a gapful number since it is divisible by the number (68) formed by its first and last digit.

It is an amenable number.

6291249568 is an abundant number, since it is smaller than the sum of its proper divisors (6823231364).

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

6291249568 is a wasteful number, since it uses less digits than its factorization.

6291249568 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11564824 (or 11564816 counting only the distinct ones).

The product of its digits is 1866240, while the sum is 52.

The square root of 6291249568 is about 79317.3976375927. The cubic root of 6291249568 is about 1846.0592589046.

The spelling of 6291249568 in words is "six billion, two hundred ninety-one million, two hundred forty-nine thousand, five hundred sixty-eight".