206616064 has 20 divisors (see below), whose sum is σ = 412829604. Its totient is φ = 103307776.

The previous prime is 206616017. The next prime is 206616073. The reversal of 206616064 is 460616602.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 201262 + ... + 202285.

Almost surely, 2^206616064 is an apocalyptic number.

It is an amenable number.

206616064 is a deficient number, since it is larger than the sum of its proper divisors (206213540).

206616064 is an frugal number, since it uses more digits than its factorization.

206616064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 403565 (or 403549 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 31.

The square root of 206616064 is about 14374.1456789612. The cubic root of 206616064 is about 591.1822163486.

The spelling of 206616064 in words is "two hundred six million, six hundred sixteen thousand, sixty-four".