248916643 has 4 divisors (see below), whose sum is σ = 248965000. Its totient is φ = 248868288.

The previous prime is 248916611. The next prime is 248916659. The reversal of 248916643 is 346619842.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 248916643 - 2⁵ = 248916611 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 248916643.

It is not an unprimeable number, because it can be changed into a prime (248916443) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15393 + ... + 27106.

It is an arithmetic number, because the mean of its divisors is an integer number (62241250).

Almost surely, 2^248916643 is an apocalyptic number.

248916643 is a deficient number, since it is larger than the sum of its proper divisors (48357).

248916643 is an equidigital number, since it uses as much as digits as its factorization.

248916643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48356.

The product of its digits is 248832, while the sum is 43.

The square root of 248916643 is about 15777.0923493526. The cubic root of 248916643 is about 629.0492444951.

The spelling of 248916643 in words is "two hundred forty-eight million, nine hundred sixteen thousand, six hundred forty-three".