205080687 has 32 divisors (see below), whose sum is σ = 348019200. Its totient is φ = 116921664.

The previous prime is 205080671. The next prime is 205080703. The reversal of 205080687 is 786080502.

205080687 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (205080671) and next prime (205080703).

It is not a de Polignac number, because 205080687 - 2⁴ = 205080671 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (205080487) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 106588 + ... + 108494.

It is an arithmetic number, because the mean of its divisors is an integer number (10875600).

Almost surely, 2^205080687 is an apocalyptic number.

205080687 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

205080687 is a deficient number, since it is larger than the sum of its proper divisors (142938513).

205080687 is a wasteful number, since it uses less digits than its factorization.

205080687 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2492 (or 2486 counting only the distinct ones).

The product of its (nonzero) digits is 26880, while the sum is 36.

The square root of 205080687 is about 14320.6384983352. The cubic root of 205080687 is about 589.7142032463.

The spelling of 205080687 in words is "two hundred five million, eighty thousand, six hundred eighty-seven".