257897063 has 4 divisors (see below), whose sum is σ = 261529488. Its totient is φ = 254264640.

The previous prime is 257897033. The next prime is 257897077. The reversal of 257897063 is 360798752.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 257897063 - 2¹⁸ = 257634919 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 257896999 and 257897017.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (257897033) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1816106 + ... + 1816247.

It is an arithmetic number, because the mean of its divisors is an integer number (65382372).

Almost surely, 2^257897063 is an apocalyptic number.

257897063 is a deficient number, since it is larger than the sum of its proper divisors (3632425).

257897063 is an equidigital number, since it uses as much as digits as its factorization.

257897063 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3632424.

The product of its (nonzero) digits is 635040, while the sum is 47.

The square root of 257897063 is about 16059.1737956845. The cubic root of 257897063 is about 636.5249998049.

The spelling of 257897063 in words is "two hundred fifty-seven million, eight hundred ninety-seven thousand, sixty-three".