245686020 has 24 divisors (see below), whose sum is σ = 687921024. Its totient is φ = 65516256.

The previous prime is 245686009. The next prime is 245686027. The reversal of 245686020 is 20686542.

245686020 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (245686027) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2047324 + ... + 2047443.

It is an arithmetic number, because the mean of its divisors is an integer number (28663376).

Almost surely, 2^245686020 is an apocalyptic number.

245686020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

245686020 is an abundant number, since it is smaller than the sum of its proper divisors (442235004).

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

245686020 is a wasteful number, since it uses less digits than its factorization.

245686020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4094779 (or 4094777 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 33.

The square root of 245686020 is about 15674.3746286734. The cubic root of 245686020 is about 626.3159643027.

The spelling of 245686020 in words is "two hundred forty-five million, six hundred eighty-six thousand, twenty".