6494863257 has 40 divisors (see below), whose sum is σ = 10198336896. Its totient is φ = 4111259328.

The previous prime is 6494863223. The next prime is 6494863267. The reversal of 6494863257 is 7523684946.

It is not a de Polignac number, because 6494863257 - 2¹⁰ = 6494862233 is a prime.

It is not an unprimeable number, because it can be changed into a prime (6494863267) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 242508 + ... + 267954.

Almost surely, 2^6494863257 is an apocalyptic number.

It is an amenable number.

6494863257 is a deficient number, since it is larger than the sum of its proper divisors (3703473639).

6494863257 is a wasteful number, since it uses less digits than its factorization.

6494863257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25619 (or 25610 counting only the distinct ones).

The product of its digits is 8709120, while the sum is 54.

The square root of 6494863257 is about 80590.7144589251. The cubic root of 6494863257 is about 1865.7638347326.

The spelling of 6494863257 in words is "six billion, four hundred ninety-four million, eight hundred sixty-three thousand, two hundred fifty-seven".