206230815 has 24 divisors (see below), whose sum is σ = 408534048. Its totient is φ = 94276800.

The previous prime is 206230799. The next prime is 206230819. The reversal of 206230815 is 518032602.

206230815 is a `hidden beast` number, since 20 + 623 + 0 + 8 + 15 = 666.

It is not a de Polignac number, because 206230815 - 2⁴ = 206230799 is a prime.

It is a super-2 number, since 2×206230815² = 85062298111128450, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (206230819) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 327036 + ... + 327665.

It is an arithmetic number, because the mean of its divisors is an integer number (17022252).

Almost surely, 2^206230815 is an apocalyptic number.

206230815 is a deficient number, since it is larger than the sum of its proper divisors (202303233).

206230815 is a wasteful number, since it uses less digits than its factorization.

206230815 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 654719 (or 654716 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

The square root of 206230815 is about 14360.7386648459. The cubic root of 206230815 is about 590.8145552658.

The spelling of 206230815 in words is "two hundred six million, two hundred thirty thousand, eight hundred fifteen".