245689636 has 12 divisors (see below), whose sum is σ = 430822000. Its totient is φ = 122597640.

The previous prime is 245689621. The next prime is 245689637. The reversal of 245689636 is 636986542.

245689636 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 245689636.

It is not an unprimeable number, because it can be changed into a prime (245689637) 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, 59550 + ... + 63541.

Almost surely, 2^245689636 is an apocalyptic number.

It is an amenable number.

245689636 is a deficient number, since it is larger than the sum of its proper divisors (185132364).

245689636 is a wasteful number, since it uses less digits than its factorization.

245689636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 123594 (or 123592 counting only the distinct ones).

The product of its digits is 1866240, while the sum is 49.

The square root of 245689636 is about 15674.4899757536. The cubic root of 245689636 is about 626.3190369879.

The spelling of 245689636 in words is "two hundred forty-five million, six hundred eighty-nine thousand, six hundred thirty-six".