245680686 has 24 divisors (see below), whose sum is σ = 533727480. Its totient is φ = 81675216.

The previous prime is 245680679. The next prime is 245680739. The reversal of 245680686 is 686086542.

245680686 is a `hidden beast` number, since 2 + 4 + 568 + 0 + 6 + 86 = 666.

245680686 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11185 + ... + 24828.

It is an arithmetic number, because the mean of its divisors is an integer number (22238645).

Almost surely, 2^245680686 is an apocalyptic number.

245680686 is an abundant number, since it is smaller than the sum of its proper divisors (288046794).

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

245680686 is a wasteful number, since it uses less digits than its factorization.

245680686 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36400 (or 36397 counting only the distinct ones).

The product of its (nonzero) digits is 552960, while the sum is 45.

The square root of 245680686 is about 15674.2044774209. The cubic root of 245680686 is about 626.3114316970.

The spelling of 245680686 in words is "two hundred forty-five million, six hundred eighty thousand, six hundred eighty-six".