248856613 has 2 divisors, whose sum is σ = 248856614. Its totient is φ = 248856612.

The previous prime is 248856611. The next prime is 248856653. The reversal of 248856613 is 316658842.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 236452129 + 12404484 = 15377^2 + 3522^2 .

It is a cyclic number.

It is not a de Polignac number, because 248856613 - 2¹ = 248856611 is a prime.

It is a super-2 number, since 2×248856613² = 123859227667663538, which contains 22 as substring.

Together with 248856611, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 248856613.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (248856611) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 124428306 + 124428307.

It is an arithmetic number, because the mean of its divisors is an integer number (124428307).

Almost surely, 2^248856613 is an apocalyptic number.

It is an amenable number.

248856613 is a deficient number, since it is larger than the sum of its proper divisors (1).

248856613 is an equidigital number, since it uses as much as digits as its factorization.

248856613 is an evil number, because the sum of its binary digits is even.

The product of its digits is 276480, while the sum is 43.

The square root of 248856613 is about 15775.1897928361. The cubic root of 248856613 is about 628.9986721941.

The spelling of 248856613 in words is "two hundred forty-eight million, eight hundred fifty-six thousand, six hundred thirteen".