245365866 has 24 divisors (see below), whose sum is σ = 532047360. Its totient is φ = 81723816.

The previous prime is 245365849. The next prime is 245365871. The reversal of 245365866 is 668563542.

245365866 is a `hidden beast` number, since 2 + 4 + 536 + 58 + 66 = 666.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 21591 + ... + 30933.

It is an arithmetic number, because the mean of its divisors is an integer number (22168640).

Almost surely, 2^245365866 is an apocalyptic number.

245365866 is an abundant number, since it is smaller than the sum of its proper divisors (286681494).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

245365866 is a wasteful number, since it uses less digits than its factorization.

245365866 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10810 (or 10807 counting only the distinct ones).

The product of its digits is 1036800, while the sum is 45.

The square root of 245365866 is about 15664.1586432212. The cubic root of 245365866 is about 626.0437948041.

The spelling of 245365866 in words is "two hundred forty-five million, three hundred sixty-five thousand, eight hundred sixty-six".