249608663 has 2 divisors, whose sum is σ = 249608664. Its totient is φ = 249608662.

The previous prime is 249608659. The next prime is 249608687. The reversal of 249608663 is 366806942.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 249608663 - 2² = 249608659 is a prime.

It is a super-3 number, since 3×249608663³ (a number of 26 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (249608633) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 124804331 + 124804332.

It is an arithmetic number, because the mean of its divisors is an integer number (124804332).

Almost surely, 2^249608663 is an apocalyptic number.

249608663 is a deficient number, since it is larger than the sum of its proper divisors (1).

249608663 is an equidigital number, since it uses as much as digits as its factorization.

249608663 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 373248, while the sum is 44.

The square root of 249608663 is about 15799.0082916619. The cubic root of 249608663 is about 629.6316508043.

The spelling of 249608663 in words is "two hundred forty-nine million, six hundred eight thousand, six hundred sixty-three".