212827705 has 16 divisors (see below), whose sum is σ = 259723008. Its totient is φ = 167400000.

The previous prime is 212827697. The next prime is 212827733. The reversal of 212827705 is 507728212.

It is not a de Polignac number, because 212827705 - 2³ = 212827697 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 74860 + ... + 77650.

It is an arithmetic number, because the mean of its divisors is an integer number (16232688).

Almost surely, 2^212827705 is an apocalyptic number.

It is an amenable number.

212827705 is a deficient number, since it is larger than the sum of its proper divisors (46895303).

212827705 is a wasteful number, since it uses less digits than its factorization.

212827705 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3048.

The product of its (nonzero) digits is 15680, while the sum is 34.

The square root of 212827705 is about 14588.6155957308. The cubic root of 212827705 is about 597.0481916753.

The spelling of 212827705 in words is "two hundred twelve million, eight hundred twenty-seven thousand, seven hundred five".