212765871 has 8 divisors (see below), whose sum is σ = 283779760. Its totient is φ = 141797952.

The previous prime is 212765843. The next prime is 212765879. The reversal of 212765871 is 178567212.

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

It is not a de Polignac number, because 212765871 - 2¹⁸ = 212503727 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212765879) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1365 + ... + 20673.

It is an arithmetic number, because the mean of its divisors is an integer number (35472470).

Almost surely, 2^212765871 is an apocalyptic number.

212765871 is a deficient number, since it is larger than the sum of its proper divisors (71013889).

212765871 is a wasteful number, since it uses less digits than its factorization.

212765871 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22985.

The product of its digits is 47040, while the sum is 39.

The square root of 212765871 is about 14586.4961865419. The cubic root of 212765871 is about 596.9903648465.

The spelling of 212765871 in words is "two hundred twelve million, seven hundred sixty-five thousand, eight hundred seventy-one".