257067263 has 4 divisors (see below), whose sum is σ = 257331360. Its totient is φ = 256803168.

The previous prime is 257067259. The next prime is 257067271. The reversal of 257067263 is 362760752.

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 257067263 - 2² = 257067259 is a prime.

It is a super-2 number, since 2×257067263² = 132167155412622338, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (257067233) 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 3 ways as a sum of consecutive naturals, for example, 130583 + ... + 132536.

It is an arithmetic number, because the mean of its divisors is an integer number (64332840).

Almost surely, 2^257067263 is an apocalyptic number.

257067263 is a deficient number, since it is larger than the sum of its proper divisors (264097).

257067263 is an equidigital number, since it uses as much as digits as its factorization.

257067263 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 264096.

The product of its (nonzero) digits is 105840, while the sum is 38.

The square root of 257067263 is about 16033.3172799642. The cubic root of 257067263 is about 635.8415799077.

The spelling of 257067263 in words is "two hundred fifty-seven million, sixty-seven thousand, two hundred sixty-three".