8257696257 has 8 divisors (see below), whose sum is σ = 11010803776. Its totient is φ = 5504859792.

The previous prime is 8257696253. The next prime is 8257696303. The reversal of 8257696257 is 7526967528.

8257696257 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 8257696257 - 2² = 8257696253 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 8257696197 and 8257696206.

It is not an unprimeable number, because it can be changed into a prime (8257696253) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19308 + ... + 129954.

It is an arithmetic number, because the mean of its divisors is an integer number (1376350472).

Almost surely, 2^8257696257 is an apocalyptic number.

It is an amenable number.

8257696257 is a deficient number, since it is larger than the sum of its proper divisors (2753107519).

8257696257 is a wasteful number, since it uses less digits than its factorization.

8257696257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135527.

The product of its digits is 12700800, while the sum is 57.

The square root of 8257696257 is about 90871.8672472399. The cubic root of 8257696257 is about 2021.2481467798.

The spelling of 8257696257 in words is "eight billion, two hundred fifty-seven million, six hundred ninety-six thousand, two hundred fifty-seven".