249996663 has 12 divisors (see below), whose sum is σ = 412693008. Its totient is φ = 142855200.

The previous prime is 249996647. The next prime is 249996671. The reversal of 249996663 is 366699942.

It is not a de Polignac number, because 249996663 - 2⁴ = 249996647 is a prime.

It is a super-2 number, since 2×249996663² = 124996663022271138, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (249996613) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1984038 + ... + 1984163.

It is an arithmetic number, because the mean of its divisors is an integer number (34391084).

Almost surely, 2^249996663 is an apocalyptic number.

249996663 is a deficient number, since it is larger than the sum of its proper divisors (162696345).

249996663 is a wasteful number, since it uses less digits than its factorization.

249996663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3968214 (or 3968211 counting only the distinct ones).

The product of its digits is 3779136, while the sum is 54.

The square root of 249996663 is about 15811.2827752842. The cubic root of 249996663 is about 629.9577220306.

The spelling of 249996663 in words is "two hundred forty-nine million, nine hundred ninety-six thousand, six hundred sixty-three".