2146668785 has 8 divisors (see below), whose sum is σ = 2576468736. Its totient is φ = 1717024240.

The previous prime is 2146668779. The next prime is 2146668791. The reversal of 2146668785 is 5878666412.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (2146668779) and next prime (2146668791).

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

It is a de Polignac number, because none of the positive numbers 2^k-2146668785 is a prime.

It is a Duffinian 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, 5921 + ... + 65790.

It is an arithmetic number, because the mean of its divisors is an integer number (322058592).

Almost surely, 2^2146668785 is an apocalyptic number.

It is an amenable number.

2146668785 is a deficient number, since it is larger than the sum of its proper divisors (429799951).

2146668785 is an equidigital number, since it uses as much as digits as its factorization.

2146668785 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77703.

The product of its digits is 3870720, while the sum is 53.

The square root of 2146668785 is about 46332.1571373490. The cubic root of 2146668785 is about 1289.9959507515.

The spelling of 2146668785 in words is "two billion, one hundred forty-six million, six hundred sixty-eight thousand, seven hundred eighty-five".