212664265 has 8 divisors (see below), whose sum is σ = 278396928. Its totient is φ = 154664880.

The previous prime is 212664217. The next prime is 212664293. The reversal of 212664265 is 562466212.

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

It is not a de Polignac number, because 212664265 - 2¹¹ = 212662217 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 212664265.

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, 1933257 + ... + 1933366.

It is an arithmetic number, because the mean of its divisors is an integer number (34799616).

Almost surely, 2^212664265 is an apocalyptic number.

It is an amenable number.

212664265 is a deficient number, since it is larger than the sum of its proper divisors (65732663).

212664265 is a wasteful number, since it uses less digits than its factorization.

212664265 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3866639.

The product of its digits is 34560, while the sum is 34.

The square root of 212664265 is about 14583.0128917175. The cubic root of 212664265 is about 596.8953191186.

The spelling of 212664265 in words is "two hundred twelve million, six hundred sixty-four thousand, two hundred sixty-five".