206516461 has 16 divisors (see below), whose sum is σ = 215680320. Its totient is φ = 197608320.

The previous prime is 206516447. The next prime is 206516581. The reversal of 206516461 is 164615602.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-206516461 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (206516441) 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, 659641 + ... + 659953.

It is an arithmetic number, because the mean of its divisors is an integer number (13480020).

Almost surely, 2^206516461 is an apocalyptic number.

It is an amenable number.

206516461 is a deficient number, since it is larger than the sum of its proper divisors (9163859).

206516461 is a wasteful number, since it uses less digits than its factorization.

206516461 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 636.

The product of its (nonzero) digits is 8640, while the sum is 31.

The square root of 206516461 is about 14370.6806032282. The cubic root of 206516461 is about 591.0872043964.

The spelling of 206516461 in words is "two hundred six million, five hundred sixteen thousand, four hundred sixty-one".