212744705 has 8 divisors (see below), whose sum is σ = 255441192. Its totient is φ = 170097408.

The previous prime is 212744699. The next prime is 212744711. The reversal of 212744705 is 507447212.

It is an interprime number because it is at equal distance from previous prime (212744699) and next prime (212744711).

It can be written as a sum of positive squares in 4 ways, for example, as 1100401 + 211644304 = 1049^2 + 14548^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 212744705 - 2⁴ = 212744689 is a prime.

It is a Duffinian 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, 1994 + ... + 20723.

It is an arithmetic number, because the mean of its divisors is an integer number (31930149).

Almost surely, 2^212744705 is an apocalyptic number.

It is an amenable number.

212744705 is a deficient number, since it is larger than the sum of its proper divisors (42696487).

212744705 is a wasteful number, since it uses less digits than its factorization.

212744705 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24595.

The product of its (nonzero) digits is 15680, while the sum is 32.

The square root of 212744705 is about 14585.7706344231. The cubic root of 212744705 is about 596.9705679417.

The spelling of 212744705 in words is "two hundred twelve million, seven hundred forty-four thousand, seven hundred five".