206097860 has 24 divisors (see below), whose sum is σ = 433771800. Its totient is φ = 82255104.

The previous prime is 206097823. The next prime is 206097869. The reversal of 206097860 is 68790602.

It can be written as a sum of positive squares in 4 ways, for example, as 120868036 + 85229824 = 10994^2 + 9232^2 .

It is not an unprimeable number, because it can be changed into a prime (206097869) 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, 2135 + ... + 20414.

It is an arithmetic number, because the mean of its divisors is an integer number (18073825).

Almost surely, 2^206097860 is an apocalyptic number.

206097860 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

206097860 is an abundant number, since it is smaller than the sum of its proper divisors (227673940).

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

206097860 is a wasteful number, since it uses less digits than its factorization.

206097860 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23015 (or 23013 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 38.

The square root of 206097860 is about 14356.1088042687. The cubic root of 206097860 is about 590.6875638399.

The spelling of 206097860 in words is "two hundred six million, ninety-seven thousand, eight hundred sixty".