212785263 has 12 divisors (see below), whose sum is σ = 312395928. Its totient is φ = 139530960.

The previous prime is 212785247. The next prime is 212785273. The reversal of 212785263 is 362587212.

212785263 is a `hidden beast` number, since 2 + 127 + 8 + 526 + 3 = 666.

It is not a de Polignac number, because 212785263 - 2⁴ = 212785247 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212785273) 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 11 ways as a sum of consecutive naturals, for example, 193245 + ... + 194342.

It is an arithmetic number, because the mean of its divisors is an integer number (26032994).

Almost surely, 2^212785263 is an apocalyptic number.

212785263 is a deficient number, since it is larger than the sum of its proper divisors (99610665).

212785263 is a wasteful number, since it uses less digits than its factorization.

212785263 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 387654 (or 387651 counting only the distinct ones).

The product of its digits is 40320, while the sum is 36.

The square root of 212785263 is about 14587.1608958015. The cubic root of 212785263 is about 597.0085013478.

The spelling of 212785263 in words is "two hundred twelve million, seven hundred eighty-five thousand, two hundred sixty-three".