248863661 has 8 divisors (see below), whose sum is σ = 258454944. Its totient is φ = 239445360.

The previous prime is 248863649. The next prime is 248863709. The reversal of 248863661 is 166368842.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-248863661 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (248863621) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 40310 + ... + 46071.

It is an arithmetic number, because the mean of its divisors is an integer number (32306868).

Almost surely, 2^248863661 is an apocalyptic number.

It is an amenable number.

248863661 is a deficient number, since it is larger than the sum of its proper divisors (9591283).

248863661 is an equidigital number, since it uses as much as digits as its factorization.

248863661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86491.

The product of its digits is 331776, while the sum is 44.

The square root of 248863661 is about 15775.4131800089. The cubic root of 248863661 is about 629.0046102063.

The spelling of 248863661 in words is "two hundred forty-eight million, eight hundred sixty-three thousand, six hundred sixty-one".