248812691 has 2 divisors, whose sum is σ = 248812692. Its totient is φ = 248812690.

The previous prime is 248812667. The next prime is 248812709. The reversal of 248812691 is 196218842.

248812691 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-248812691 is a prime.

It is a super-2 number, since 2×248812691² = 123815510405322962, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (248812601) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 124406345 + 124406346.

It is an arithmetic number, because the mean of its divisors is an integer number (124406346).

Almost surely, 2^248812691 is an apocalyptic number.

248812691 is a deficient number, since it is larger than the sum of its proper divisors (1).

248812691 is an equidigital number, since it uses as much as digits as its factorization.

248812691 is an evil number, because the sum of its binary digits is even.

The product of its digits is 55296, while the sum is 41.

The square root of 248812691 is about 15773.7976086927. The cubic root of 248812691 is about 628.9616649327.

It can be divided in two parts, 24881 and 2691, that added together give a palindrome (27572).

The spelling of 248812691 in words is "two hundred forty-eight million, eight hundred twelve thousand, six hundred ninety-one".