2665212685 has 8 divisors (see below), whose sum is σ = 3222670176. Its totient is φ = 2115893520.

The previous prime is 2665212679. The next prime is 2665212701. The reversal of 2665212685 is 5862125662.

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

It is not a de Polignac number, because 2665212685 - 2¹¹ = 2665210637 is a prime.

It is a Duffinian number.

It is a congruent number.

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, 2033859 + ... + 2035168.

It is an arithmetic number, because the mean of its divisors is an integer number (402833772).

Almost surely, 2^2665212685 is an apocalyptic number.

It is an amenable number.

2665212685 is a deficient number, since it is larger than the sum of its proper divisors (557457491).

2665212685 is a wasteful number, since it uses less digits than its factorization.

2665212685 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4069163.

The product of its digits is 345600, while the sum is 43.

The square root of 2665212685 is about 51625.6979129580. The cubic root of 2665212685 is about 1386.4704692355.

The spelling of 2665212685 in words is "two billion, six hundred sixty-five million, two hundred twelve thousand, six hundred eighty-five".