245165660 has 24 divisors (see below), whose sum is σ = 515970000. Its totient is φ = 97852544.

The previous prime is 245165621. The next prime is 245165689. The reversal of 245165660 is 66561542.

It is a self number, because there is not a number n which added to its sum of digits gives 245165660.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3785 + ... + 22464.

It is an arithmetic number, because the mean of its divisors is an integer number (21498750).

Almost surely, 2^245165660 is an apocalyptic number.

245165660 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

245165660 is an abundant number, since it is smaller than the sum of its proper divisors (270804340).

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

245165660 is a wasteful number, since it uses less digits than its factorization.

245165660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26725 (or 26723 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 35.

The square root of 245165660 is about 15657.7667628561. The cubic root of 245165660 is about 625.8734752303.

The spelling of 245165660 in words is "two hundred forty-five million, one hundred sixty-five thousand, six hundred sixty".