212006610 has 24 divisors (see below), whose sum is σ = 551217420. Its totient is φ = 56535072.

The previous prime is 212006593. The next prime is 212006611. The reversal of 212006610 is 16600212.

It is a happy number.

212006610 is a `hidden beast` number, since 2 + 1 + 2 + 0 + 0 + 661 + 0 = 666.

212006610 is digitally balanced in base 3, 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 2 ways, for example, as 203832729 + 8173881 = 14277^2 + 2859^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (212006611) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1177725 + ... + 1177904.

Almost surely, 2^212006610 is an apocalyptic number.

212006610 is an abundant number, since it is smaller than the sum of its proper divisors (339210810).

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

212006610 is a wasteful number, since it uses less digits than its factorization.

212006610 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2355642 (or 2355639 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

The square root of 212006610 is about 14560.4467651237. The cubic root of 212006610 is about 596.2793928260.

Adding to 212006610 its reverse (16600212), we get a palindrome (228606822).

The spelling of 212006610 in words is "two hundred twelve million, six thousand, six hundred ten".