206899456 has 81 divisors (see below), whose sum is σ = 441965433. Its totient is φ = 96660480.

The previous prime is 206899453. The next prime is 206899481. The reversal of 206899456 is 654998602.

The square root of 206899456 is 14384.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 108493056 + 98406400 = 10416^2 + 9920^2 .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (206899453) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 6674161 + ... + 6674191.

Almost surely, 2^206899456 is an apocalyptic number.

206899456 is the 14384-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 206899456

206899456 is an abundant number, since it is smaller than the sum of its proper divisors (235065977).

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

206899456 is an frugal number, since it uses more digits than its factorization.

206899456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136 (or 62 counting only the distinct ones).

The product of its (nonzero) digits is 933120, while the sum is 49.

The cubic root of 206899456 is about 591.4523789049.

Multiplying 206899456 by its sum of digits (49), we get a square (10138073344 = 100688²).

The spelling of 206899456 in words is "two hundred six million, eight hundred ninety-nine thousand, four hundred fifty-six".