206670938 has 32 divisors (see below), whose sum is σ = 337146624. Its totient is φ = 94643712.

The previous prime is 206670931. The next prime is 206670973. The reversal of 206670938 is 839076602.

It is a super-2 number, since 2×206670938² = 85425753227599688, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 206670895 and 206670904.

It is not an unprimeable number, because it can be changed into a prime (206670931) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 452006 + ... + 452462.

It is an arithmetic number, because the mean of its divisors is an integer number (10535832).

Almost surely, 2^206670938 is an apocalyptic number.

206670938 is a deficient number, since it is larger than the sum of its proper divisors (130475686).

206670938 is a wasteful number, since it uses less digits than its factorization.

206670938 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 806.

The product of its (nonzero) digits is 108864, while the sum is 41.

The square root of 206670938 is about 14376.0543265529. The cubic root of 206670938 is about 591.2345479709.

The spelling of 206670938 in words is "two hundred six million, six hundred seventy thousand, nine hundred thirty-eight".