206668370 has 16 divisors (see below), whose sum is σ = 374934528. Its totient is φ = 82015920.

The previous prime is 206668369. The next prime is 206668373. The reversal of 206668370 is 73866602.

It is not an unprimeable number, because it can be changed into a prime (206668373) 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, 80096 + ... + 82635.

It is an arithmetic number, because the mean of its divisors is an integer number (23433408).

Almost surely, 2^206668370 is an apocalyptic number.

206668370 is a deficient number, since it is larger than the sum of its proper divisors (168266158).

206668370 is a wasteful number, since it uses less digits than its factorization.

206668370 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 162865.

The product of its (nonzero) digits is 72576, while the sum is 38.

The square root of 206668370 is about 14375.9650110871. The cubic root of 206668370 is about 591.2320991560.

The spelling of 206668370 in words is "two hundred six million, six hundred sixty-eight thousand, three hundred seventy".