251000068 has 12 divisors (see below), whose sum is σ = 479182032. Its totient is φ = 114090920.

The previous prime is 251000063. The next prime is 251000083. The reversal of 251000068 is 860000152.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is not an unprimeable number, because it can be changed into a prime (251000063) 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, 2852230 + ... + 2852317.

It is an arithmetic number, because the mean of its divisors is an integer number (39931836).

Almost surely, 2^251000068 is an apocalyptic number.

It is an amenable number.

251000068 is a deficient number, since it is larger than the sum of its proper divisors (228181964).

251000068 is a wasteful number, since it uses less digits than its factorization.

251000068 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5704562 (or 5704560 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 22.

The square root of 251000068 is about 15842.9816638157. The cubic root of 251000068 is about 630.7994118309.

The spelling of 251000068 in words is "two hundred fifty-one million, sixty-eight", and thus it is an aban number.