245404206 has 48 divisors (see below), whose sum is σ = 552530160. Its totient is φ = 78624000.

The previous prime is 245404193. The next prime is 245404217. The reversal of 245404206 is 602404542.

245404206 is a `hidden beast` number, since 2 + 454 + 0 + 4 + 206 = 666.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 245404206.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 130086 + ... + 131958.

It is an arithmetic number, because the mean of its divisors is an integer number (11511045).

Almost surely, 2^245404206 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 245404206, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (276265080).

245404206 is an abundant number, since it is smaller than the sum of its proper divisors (307125954).

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

245404206 is a wasteful number, since it uses less digits than its factorization.

245404206 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2161 (or 2158 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 27.

The square root of 245404206 is about 15665.3824083551. The cubic root of 245404206 is about 626.0764009002.

Adding to 245404206 its reverse (602404542), we get a palindrome (847808748).

The spelling of 245404206 in words is "two hundred forty-five million, four hundred four thousand, two hundred six".