248566791 has 12 divisors (see below), whose sum is σ = 364291256. Its totient is φ = 150646320.

The previous prime is 248566783. The next prime is 248566793. The reversal of 248566791 is 197665842.

It is not a de Polignac number, because 248566791 - 2³ = 248566783 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 248566791.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (248566793) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 342016 + ... + 342741.

Almost surely, 2^248566791 is an apocalyptic number.

248566791 is a deficient number, since it is larger than the sum of its proper divisors (115724465).

248566791 is a wasteful number, since it uses less digits than its factorization.

248566791 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 684782 (or 684771 counting only the distinct ones).

The product of its digits is 725760, while the sum is 48.

The square root of 248566791 is about 15766.0011099835. The cubic root of 248566791 is about 628.7543970329.

The spelling of 248566791 in words is "two hundred forty-eight million, five hundred sixty-six thousand, seven hundred ninety-one".