212673647 has 2 divisors, whose sum is σ = 212673648. Its totient is φ = 212673646.

The previous prime is 212673641. The next prime is 212673661. The reversal of 212673647 is 746376212.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 212673647 - 2¹² = 212669551 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 212673647.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (212673641) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106336823 + 106336824.

It is an arithmetic number, because the mean of its divisors is an integer number (106336824).

Almost surely, 2^212673647 is an apocalyptic number.

212673647 is a deficient number, since it is larger than the sum of its proper divisors (1).

212673647 is an equidigital number, since it uses as much as digits as its factorization.

212673647 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 84672, while the sum is 38.

The square root of 212673647 is about 14583.3345638095. The cubic root of 212673647 is about 596.9040966308.

The spelling of 212673647 in words is "two hundred twelve million, six hundred seventy-three thousand, six hundred forty-seven".