253680887 has 2 divisors, whose sum is σ = 253680888. Its totient is φ = 253680886.

The previous prime is 253680871. The next prime is 253680971. The reversal of 253680887 is 788086352.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 253680887 - 2⁴ = 253680871 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (253680187) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 126840443 + 126840444.

It is an arithmetic number, because the mean of its divisors is an integer number (126840444).

Almost surely, 2^253680887 is an apocalyptic number.

253680887 is a deficient number, since it is larger than the sum of its proper divisors (1).

253680887 is an equidigital number, since it uses as much as digits as its factorization.

253680887 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 645120, while the sum is 47.

The square root of 253680887 is about 15927.3628388381. The cubic root of 253680887 is about 633.0372253530.

The spelling of 253680887 in words is "two hundred fifty-three million, six hundred eighty thousand, eight hundred eighty-seven".