6450686488 has 16 divisors (see below), whose sum is σ = 12098701080. Its totient is φ = 3224366208.

The previous prime is 6450686477. The next prime is 6450686507. The reversal of 6450686488 is 8846860546.

It is a super-2 number, since 2×6450686488² = 83222712332931548288, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 93681 + ... + 147232.

Almost surely, 2^6450686488 is an apocalyptic number.

It is an amenable number.

6450686488 is a deficient number, since it is larger than the sum of its proper divisors (5648014592).

6450686488 is a wasteful number, since it uses less digits than its factorization.

6450686488 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 244266 (or 244262 counting only the distinct ones).

The product of its (nonzero) digits is 8847360, while the sum is 55.

The square root of 6450686488 is about 80316.1657949382. The cubic root of 6450686488 is about 1861.5240224404.

The spelling of 6450686488 in words is "six billion, four hundred fifty million, six hundred eighty-six thousand, four hundred eighty-eight".