212740606 has 16 divisors (see below), whose sum is σ = 361746000. Its totient is φ = 93019968.

The previous prime is 212740603. The next prime is 212740609. The reversal of 212740606 is 606047212.

212740606 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (212740603) and next prime (212740609).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212740603) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 214831 + ... + 215818.

It is an arithmetic number, because the mean of its divisors is an integer number (22609125).

Almost surely, 2^212740606 is an apocalyptic number.

212740606 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

212740606 is a deficient number, since it is larger than the sum of its proper divisors (149005394).

212740606 is a wasteful number, since it uses less digits than its factorization.

212740606 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 430683.

The product of its (nonzero) digits is 4032, while the sum is 28.

The square root of 212740606 is about 14585.6301200874. The cubic root of 212740606 is about 596.9667339284.

Adding to 212740606 its reverse (606047212), we get a palindrome (818787818).

The spelling of 212740606 in words is "two hundred twelve million, seven hundred forty thousand, six hundred six".