206012646 has 40 divisors (see below), whose sum is σ = 527569680. Its totient is φ = 58860432.

The previous prime is 206012627. The next prime is 206012683. The reversal of 206012646 is 646210602.

It is a happy number.

206012646 is a `hidden beast` number, since 2 + 0 + 6 + 0 + 12 + 646 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 89701 + ... + 91968.

It is an arithmetic number, because the mean of its divisors is an integer number (13189242).

Almost surely, 2^206012646 is an apocalyptic number.

206012646 is an abundant number, since it is smaller than the sum of its proper divisors (321557034).

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

206012646 is a wasteful number, since it uses less digits than its factorization.

206012646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 181690 (or 181681 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

The square root of 206012646 is about 14353.1406319314. The cubic root of 206012646 is about 590.6061433133.

It can be divided in two parts, 2060 and 12646, that added together give a triangular number (14706 = T₁₇₁).

The spelling of 206012646 in words is "two hundred six million, twelve thousand, six hundred forty-six".