245999680 has 112 divisors (see below), whose sum is σ = 611550720. Its totient is φ = 94169088.

The previous prime is 245999657. The next prime is 245999681. The reversal of 245999680 is 86999542.

It is not an unprimeable number, because it can be changed into a prime (245999681) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 935229 + ... + 935491.

Almost surely, 2^245999680 is an apocalyptic number.

245999680 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 245999680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (305775360).

245999680 is an abundant number, since it is smaller than the sum of its proper divisors (365551040).

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

245999680 is a wasteful number, since it uses less digits than its factorization.

245999680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 396 (or 386 counting only the distinct ones).

The product of its (nonzero) digits is 1399680, while the sum is 52.

The square root of 245999680 is about 15684.3769401274. The cubic root of 245999680 is about 626.5823839168.

The spelling of 245999680 in words is "two hundred forty-five million, nine hundred ninety-nine thousand, six hundred eighty".