206491600 has 120 divisors (see below), whose sum is σ = 586748160. Its totient is φ = 68328960.

The previous prime is 206491553. The next prime is 206491609. The reversal of 206491600 is 6194602.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (206491609) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 79929 + ... + 82471.

It is an arithmetic number, because the mean of its divisors is an integer number (4889568).

Almost surely, 2^206491600 is an apocalyptic number.

206491600 is a gapful number since it is divisible by the number (20) 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 206491600, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (293374080).

206491600 is an abundant number, since it is smaller than the sum of its proper divisors (380256560).

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

206491600 is a wasteful number, since it uses less digits than its factorization.

206491600 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2597 (or 2586 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 28.

The square root of 206491600 is about 14369.8155868473. The cubic root of 206491600 is about 591.0634845621.

The spelling of 206491600 in words is "two hundred six million, four hundred ninety-one thousand, six hundred".