6345867690 has 48 divisors (see below), whose sum is σ = 16509936456. Its totient is φ = 1691136000.

The previous prime is 6345867683. The next prime is 6345867691. The reversal of 6345867690 is 967685436.

It can be written as a sum of positive squares in 4 ways, for example, as 6315957729 + 29909961 = 79473^2 + 5469^2 .

It is a super-2 number, since 2×6345867690² = 80540073477971872200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (6345867691) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 122070 + ... + 166110.

Almost surely, 2^6345867690 is an apocalyptic number.

6345867690 is an abundant number, since it is smaller than the sum of its proper divisors (10164068766).

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

6345867690 is a wasteful number, since it uses less digits than its factorization.

6345867690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45655 (or 45652 counting only the distinct ones).

The product of its (nonzero) digits is 6531840, while the sum is 54.

The square root of 6345867690 is about 79660.9546139136. The cubic root of 6345867690 is about 1851.3861235849.

The spelling of 6345867690 in words is "six billion, three hundred forty-five million, eight hundred sixty-seven thousand, six hundred ninety".