249166668 has 24 divisors (see below), whose sum is σ = 582568000. Its totient is φ = 82887120.

The previous prime is 249166663. The next prime is 249166681. The reversal of 249166668 is 866661942.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (249166661) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14818 + ... + 26793.

Almost surely, 2^249166668 is an apocalyptic number.

It is an amenable number.

249166668 is an abundant number, since it is smaller than the sum of its proper divisors (333401332).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

249166668 is a wasteful number, since it uses less digits than its factorization.

249166668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42117 (or 42115 counting only the distinct ones).

The product of its digits is 746496, while the sum is 48.

The square root of 249166668 is about 15785.0140323029. The cubic root of 249166668 is about 629.2597907585.

The spelling of 249166668 in words is "two hundred forty-nine million, one hundred sixty-six thousand, six hundred sixty-eight".