245663340 has 48 divisors (see below), whose sum is σ = 740771808. Its totient is φ = 60470784.

The previous prime is 245663281. The next prime is 245663351. The reversal of 245663340 is 43366542.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 156697 + ... + 158256.

It is an arithmetic number, because the mean of its divisors is an integer number (15432746).

Almost surely, 2^245663340 is an apocalyptic number.

245663340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

245663340 is an abundant number, since it is smaller than the sum of its proper divisors (495108468).

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

245663340 is a wasteful number, since it uses less digits than its factorization.

245663340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 314978 (or 314976 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 33.

The square root of 245663340 is about 15673.6511381363. The cubic root of 245663340 is about 626.2966913526.

The spelling of 245663340 in words is "two hundred forty-five million, six hundred sixty-three thousand, three hundred forty".