256948823 has 4 divisors (see below), whose sum is σ = 261796968. Its totient is φ = 252100680.

The previous prime is 256948793. The next prime is 256948841. The reversal of 256948823 is 328849652.

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 256948823 - 2⁶ = 256948759 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (256948123) 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, 2423993 + ... + 2424098.

It is an arithmetic number, because the mean of its divisors is an integer number (65449242).

Almost surely, 2^256948823 is an apocalyptic number.

256948823 is a deficient number, since it is larger than the sum of its proper divisors (4848145).

256948823 is an equidigital number, since it uses as much as digits as its factorization.

256948823 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4848144.

The product of its digits is 829440, while the sum is 47.

The square root of 256948823 is about 16029.6232956361. The cubic root of 256948823 is about 635.7439133221.

The spelling of 256948823 in words is "two hundred fifty-six million, nine hundred forty-eight thousand, eight hundred twenty-three".