249996613 has 2 divisors, whose sum is σ = 249996614. Its totient is φ = 249996612.

The previous prime is 249996589. The next prime is 249996647. The reversal of 249996613 is 316699942.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 211469764 + 38526849 = 14542^2 + 6207^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-249996613 is a prime.

It is a super-2 number, since 2×249996613² = 124996613022943538, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (249996673) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 124998306 + 124998307.

It is an arithmetic number, because the mean of its divisors is an integer number (124998307).

Almost surely, 2^249996613 is an apocalyptic number.

It is an amenable number.

249996613 is a deficient number, since it is larger than the sum of its proper divisors (1).

249996613 is an equidigital number, since it uses as much as digits as its factorization.

249996613 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 629856, while the sum is 49.

The square root of 249996613 is about 15811.2811941348. The cubic root of 249996613 is about 629.9576800329.

The spelling of 249996613 in words is "two hundred forty-nine million, nine hundred ninety-six thousand, six hundred thirteen".