213285966 has 16 divisors (see below), whose sum is σ = 426891600. Its totient is φ = 71042048.

The previous prime is 213285929. The next prime is 213285971. The reversal of 213285966 is 669582312.

It is a congruent number.

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, 4161 + ... + 21068.

It is an arithmetic number, because the mean of its divisors is an integer number (26680725).

Almost surely, 2^213285966 is an apocalyptic number.

213285966 is an abundant number, since it is smaller than the sum of its proper divisors (213605634).

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

213285966 is a wasteful number, since it uses less digits than its factorization.

213285966 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26643.

The product of its digits is 155520, while the sum is 42.

The square root of 213285966 is about 14604.3132669770. The cubic root of 213285966 is about 597.4764062274.

The spelling of 213285966 in words is "two hundred thirteen million, two hundred eighty-five thousand, nine hundred sixty-six".