206561102 has 8 divisors (see below), whose sum is σ = 338009112. Its totient is φ = 93891400.

The previous prime is 206561077. The next prime is 206561107. The reversal of 206561102 is 201165602.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (206561107) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4694549 + ... + 4694592.

It is an arithmetic number, because the mean of its divisors is an integer number (42251139).

Almost surely, 2^206561102 is an apocalyptic number.

206561102 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

206561102 is a deficient number, since it is larger than the sum of its proper divisors (131448010).

206561102 is a wasteful number, since it uses less digits than its factorization.

206561102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9389154.

The product of its (nonzero) digits is 720, while the sum is 23.

The square root of 206561102 is about 14372.2337164409. The cubic root of 206561102 is about 591.1297915147.

The spelling of 206561102 in words is "two hundred six million, five hundred sixty-one thousand, one hundred two".