206109696 has 132 divisors (see below), whose sum is σ = 596364792. Its totient is φ = 63258624.

The previous prime is 206109691. The next prime is 206109719. The reversal of 206109696 is 696901602.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (206109691) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 518970 + ... + 519366.

Almost surely, 2^206109696 is an apocalyptic number.

206109696 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 206109696, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (298182396).

206109696 is an abundant number, since it is smaller than the sum of its proper divisors (390255096).

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

206109696 is a wasteful number, since it uses less digits than its factorization.

206109696 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 446 (or 415 counting only the distinct ones).

The product of its (nonzero) digits is 34992, while the sum is 39.

The square root of 206109696 is about 14356.5210270455. The cubic root of 206109696 is about 590.6988711612.

The spelling of 206109696 in words is "two hundred six million, one hundred nine thousand, six hundred ninety-six".