206116556 has 24 divisors (see below), whose sum is σ = 366011184. Its totient is φ = 101548800.

The previous prime is 206116549. The next prime is 206116571. The reversal of 206116556 is 655611602.

It is a super-2 number, since 2×206116556² = 84968069314602272, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 199016 + ... + 200048.

It is an arithmetic number, because the mean of its divisors is an integer number (15250466).

Almost surely, 2^206116556 is an apocalyptic number.

It is an amenable number.

206116556 is a deficient number, since it is larger than the sum of its proper divisors (159894628).

206116556 is a wasteful number, since it uses less digits than its factorization.

206116556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1721 (or 1719 counting only the distinct ones).

The product of its (nonzero) digits is 10800, while the sum is 32.

The square root of 206116556 is about 14356.7599408780. The cubic root of 206116556 is about 590.7054245474.

The spelling of 206116556 in words is "two hundred six million, one hundred sixteen thousand, five hundred fifty-six".