257974463 has 4 divisors (see below), whose sum is σ = 269190768. Its totient is φ = 246758160.

The previous prime is 257974441. The next prime is 257974469. The reversal of 257974463 is 364479752.

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 257974463 - 2¹² = 257970367 is a prime.

It is a super-3 number, since 3×257974463³ (a number of 26 digits) contains 333 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 (257974469) 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, 5608118 + ... + 5608163.

It is an arithmetic number, because the mean of its divisors is an integer number (67297692).

Almost surely, 2^257974463 is an apocalyptic number.

257974463 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

257974463 is a deficient number, since it is larger than the sum of its proper divisors (11216305).

257974463 is a wasteful number, since it uses less digits than its factorization.

257974463 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11216304.

The product of its digits is 1270080, while the sum is 47.

The square root of 257974463 is about 16061.5834524495. The cubic root of 257974463 is about 636.5886713418.

The spelling of 257974463 in words is "two hundred fifty-seven million, nine hundred seventy-four thousand, four hundred sixty-three".