206531874 has 12 divisors (see below), whose sum is σ = 447485766. Its totient is φ = 68843952.

The previous prime is 206531863. The next prime is 206531879. The reversal of 206531874 is 478135602.

206531874 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 184769649 + 21762225 = 13593^2 + 4665^2 .

It is not an unprimeable number, because it can be changed into a prime (206531879) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5736979 + ... + 5737014.

Almost surely, 2^206531874 is an apocalyptic number.

206531874 is an abundant number, since it is smaller than the sum of its proper divisors (240953892).

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

206531874 is a wasteful number, since it uses less digits than its factorization.

206531874 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11474001 (or 11473998 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 36.

The square root of 206531874 is about 14371.2168587075. The cubic root of 206531874 is about 591.1019089554.

The spelling of 206531874 in words is "two hundred six million, five hundred thirty-one thousand, eight hundred seventy-four".