253668087 has 6 divisors (see below), whose sum is σ = 366409472. Its totient is φ = 169112052.

The previous prime is 253668059. The next prime is 253668089. The reversal of 253668087 is 780866352.

It is a de Polignac number, because none of the positive numbers 2^k-253668087 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 (253668089) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 14092663 + ... + 14092680.

Almost surely, 2^253668087 is an apocalyptic number.

253668087 is a deficient number, since it is larger than the sum of its proper divisors (112741385).

253668087 is a wasteful number, since it uses less digits than its factorization.

253668087 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28185349 (or 28185346 counting only the distinct ones).

The product of its (nonzero) digits is 483840, while the sum is 45.

The square root of 253668087 is about 15926.9610095586. The cubic root of 253668087 is about 633.0265781013.

The spelling of 253668087 in words is "two hundred fifty-three million, six hundred sixty-eight thousand, eighty-seven".