212678 has 8 divisors (see below), whose sum is σ = 326568. Its totient is φ = 103824.

The previous prime is 212677. The next prime is 212683. The reversal of 212678 is 876212.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212671) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1151 + ... + 1322.

It is an arithmetic number, because the mean of its divisors is an integer number (40821).

2²¹²⁶⁷⁸ is an apocalyptic number.

212678 is a deficient number, since it is larger than the sum of its proper divisors (113890).

212678 is a wasteful number, since it uses less digits than its factorization.

212678 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2518.

The product of its digits is 1344, while the sum is 26.

The square root of 212678 is about 461.1702505583. The cubic root of 212678 is about 59.6908169077.

The spelling of 212678 in words is "two hundred twelve thousand, six hundred seventy-eight".