248707813 has 2 divisors, whose sum is σ = 248707814. Its totient is φ = 248707812.

The previous prime is 248707801. The next prime is 248707843. The reversal of 248707813 is 318707842.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 245329569 + 3378244 = 15663^2 + 1838^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-248707813 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (248707843) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 124353906 + 124353907.

It is an arithmetic number, because the mean of its divisors is an integer number (124353907).

Almost surely, 2^248707813 is an apocalyptic number.

It is an amenable number.

248707813 is a deficient number, since it is larger than the sum of its proper divisors (1).

248707813 is an equidigital number, since it uses as much as digits as its factorization.

248707813 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 75264, while the sum is 40.

The square root of 248707813 is about 15770.4728210666. The cubic root of 248707813 is about 628.8732804916.

The spelling of 248707813 in words is "two hundred forty-eight million, seven hundred seven thousand, eight hundred thirteen".