206404616 has 64 divisors (see below), whose sum is σ = 449530560. Its totient is φ = 87808000.

The previous prime is 206404613. The next prime is 206404621. The reversal of 206404616 is 616404602.

It is a super-2 number, since 2×206404616² = 85205731012214912, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (206404613) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 420131 + ... + 420621.

It is an arithmetic number, because the mean of its divisors is an integer number (7023915).

Almost surely, 2^206404616 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 206404616, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (224765280).

206404616 is an abundant number, since it is smaller than the sum of its proper divisors (243125944).

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

206404616 is a wasteful number, since it uses less digits than its factorization.

206404616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 806 (or 802 counting only the distinct ones).

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

The square root of 206404616 is about 14366.7886460406. The cubic root of 206404616 is about 590.9804783010.

The spelling of 206404616 in words is "two hundred six million, four hundred four thousand, six hundred sixteen".