206132537 has 8 divisors (see below), whose sum is σ = 222944904. Its totient is φ = 189456768.

The previous prime is 206132519. The next prime is 206132569. The reversal of 206132537 is 735231602.

It can be written as a sum of positive squares in 4 ways, for example, as 3041536 + 203091001 = 1744^2 + 14251^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 206132537 - 2⁸ = 206132281 is a prime.

It is not an unprimeable number, because it can be changed into a prime (206131537) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 30998 + ... + 37055.

It is an arithmetic number, because the mean of its divisors is an integer number (27868113).

Almost surely, 2^206132537 is an apocalyptic number.

It is an amenable number.

206132537 is a deficient number, since it is larger than the sum of its proper divisors (16812367).

206132537 is a wasteful number, since it uses less digits than its factorization.

206132537 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68299.

The product of its (nonzero) digits is 7560, while the sum is 29.

The square root of 206132537 is about 14357.3164971731. The cubic root of 206132537 is about 590.7206906984.

The spelling of 206132537 in words is "two hundred six million, one hundred thirty-two thousand, five hundred thirty-seven".