200806155 has 96 divisors (see below), whose sum is σ = 413683200. Its totient is φ = 92093760.

The previous prime is 200806153. The next prime is 200806163. The reversal of 200806155 is 551608002.

It is not a de Polignac number, because 200806155 - 2¹ = 200806153 is a prime.

It is a super-2 number, since 2×200806155² = 80646223771768050, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (200806153) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 310042 + ... + 310688.

It is an arithmetic number, because the mean of its divisors is an integer number (4309200).

Almost surely, 2^200806155 is an apocalyptic number.

200806155 is an abundant number, since it is smaller than the sum of its proper divisors (212877045).

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

200806155 is a wasteful number, since it uses less digits than its factorization.

200806155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 702 (or 685 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 27.

The square root of 200806155 is about 14170.6088436595. The cubic root of 200806155 is about 585.5882314636.

The spelling of 200806155 in words is "two hundred million, eight hundred six thousand, one hundred fifty-five".