206087145 has 16 divisors (see below), whose sum is σ = 359716032. Its totient is φ = 99920960.

The previous prime is 206087131. The next prime is 206087159. The reversal of 206087145 is 541780602.

It is an interprime number because it is at equal distance from previous prime (206087131) and next prime (206087159).

It is not a de Polignac number, because 206087145 - 2⁵ = 206087113 is a prime.

It is a super-2 number, since 2×206087145² = 84943822668502050, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 624342 + ... + 624671.

It is an arithmetic number, because the mean of its divisors is an integer number (22482252).

Almost surely, 2^206087145 is an apocalyptic number.

It is an amenable number.

206087145 is a deficient number, since it is larger than the sum of its proper divisors (153628887).

206087145 is a wasteful number, since it uses less digits than its factorization.

206087145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1249032.

The product of its (nonzero) digits is 13440, while the sum is 33.

The square root of 206087145 is about 14355.7356133359. The cubic root of 206087145 is about 590.6773270735.

The spelling of 206087145 in words is "two hundred six million, eighty-seven thousand, one hundred forty-five".