256878703 has 2 divisors, whose sum is σ = 256878704. Its totient is φ = 256878702.

The previous prime is 256878683. The next prime is 256878733. The reversal of 256878703 is 307878652.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 256878703 - 2¹³ = 256870511 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (256878733) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 128439351 + 128439352.

It is an arithmetic number, because the mean of its divisors is an integer number (128439352).

Almost surely, 2^256878703 is an apocalyptic number.

256878703 is a deficient number, since it is larger than the sum of its proper divisors (1).

256878703 is an equidigital number, since it uses as much as digits as its factorization.

256878703 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 564480, while the sum is 46.

The square root of 256878703 is about 16027.4359459023. The cubic root of 256878703 is about 635.6860776561.

The spelling of 256878703 in words is "two hundred fifty-six million, eight hundred seventy-eight thousand, seven hundred three".