245447685 has 32 divisors (see below), whose sum is σ = 498689280. Its totient is φ = 112204224.

The previous prime is 245447663. The next prime is 245447747. The reversal of 245447685 is 586744542.

245447685 is a `hidden beast` number, since 24 + 544 + 7 + 6 + 85 = 666.

It is not a de Polignac number, because 245447685 - 2²² = 241253381 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 245447685.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 128922 + ... + 130811.

It is an arithmetic number, because the mean of its divisors is an integer number (15584040).

Almost surely, 2^245447685 is an apocalyptic number.

It is an amenable number.

245447685 is an abundant number, since it is smaller than the sum of its proper divisors (253241595).

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

245447685 is a wasteful number, since it uses less digits than its factorization.

245447685 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 259754 (or 259748 counting only the distinct ones).

The product of its digits is 1075200, while the sum is 45.

The square root of 245447685 is about 15666.7700883111. The cubic root of 245447685 is about 626.1133733287.

The spelling of 245447685 in words is "two hundred forty-five million, four hundred forty-seven thousand, six hundred eighty-five".