245856636 has 18 divisors (see below), whose sum is σ = 621471032. Its totient is φ = 81952200.

The previous prime is 245856631. The next prime is 245856643. The reversal of 245856636 is 636658542.

245856636 is a `hidden beast` number, since 2 + 4 + 5 + 8 + 5 + 6 + 636 = 666.

245856636 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (18).

It is a junction number, because it is equal to n+sod(n) for n = 245856591 and 245856600.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (245856631) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3414640 + ... + 3414711.

Almost surely, 2^245856636 is an apocalyptic number.

It is an amenable number.

245856636 is an abundant number, since it is smaller than the sum of its proper divisors (375614396).

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

245856636 is a wasteful number, since it uses less digits than its factorization.

245856636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6829361 (or 6829356 counting only the distinct ones).

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

The square root of 245856636 is about 15679.8161979023. The cubic root of 245856636 is about 626.4609119043.

The spelling of 245856636 in words is "two hundred forty-five million, eight hundred fifty-six thousand, six hundred thirty-six".