212765073 has 4 divisors (see below), whose sum is σ = 283686768. Its totient is φ = 141843380.

The previous prime is 212765071. The next prime is 212765089. The reversal of 212765073 is 370567212.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 212765073 - 2¹ = 212765071 is a prime.

It is not an unprimeable number, because it can be changed into a prime (212765071) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35460843 + ... + 35460848.

It is an arithmetic number, because the mean of its divisors is an integer number (70921692).

Almost surely, 2^212765073 is an apocalyptic number.

It is an amenable number.

212765073 is a deficient number, since it is larger than the sum of its proper divisors (70921695).

212765073 is an equidigital number, since it uses as much as digits as its factorization.

212765073 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70921694.

The product of its (nonzero) digits is 17640, while the sum is 33.

The square root of 212765073 is about 14586.4688324488. The cubic root of 212765073 is about 596.9896184879.

The spelling of 212765073 in words is "two hundred twelve million, seven hundred sixty-five thousand, seventy-three".