206308670 has 16 divisors (see below), whose sum is σ = 381392928. Its totient is φ = 80292960.

The previous prime is 206308657. The next prime is 206308681. The reversal of 206308670 is 76803602.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 278426 + ... + 279165.

It is an arithmetic number, because the mean of its divisors is an integer number (23837058).

Almost surely, 2^206308670 is an apocalyptic number.

206308670 is a deficient number, since it is larger than the sum of its proper divisors (175084258).

206308670 is a wasteful number, since it uses less digits than its factorization.

206308670 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 557635.

The product of its (nonzero) digits is 12096, while the sum is 32.

The square root of 206308670 is about 14363.4490983190. The cubic root of 206308670 is about 590.8888928151. Note that the first 4 decimals are identical.

The spelling of 206308670 in words is "two hundred six million, three hundred eight thousand, six hundred seventy".