206642612 has 24 divisors (see below), whose sum is σ = 396718560. Its totient is φ = 93400160.

The previous prime is 206642593. The next prime is 206642677. The reversal of 206642612 is 216246602.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5243 + ... + 20994.

It is an arithmetic number, because the mean of its divisors is an integer number (16529940).

Almost surely, 2^206642612 is an apocalyptic number.

206642612 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

206642612 is a deficient number, since it is larger than the sum of its proper divisors (190075948).

206642612 is a wasteful number, since it uses less digits than its factorization.

206642612 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26431 (or 26429 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 29.

The square root of 206642612 is about 14375.0691128773. The cubic root of 206642612 is about 591.2075355050.

The spelling of 206642612 in words is "two hundred six million, six hundred forty-two thousand, six hundred twelve".