2646267865 has 8 divisors (see below), whose sum is σ = 3187597248. Its totient is φ = 2108963760.

The previous prime is 2646267853. The next prime is 2646267887. The reversal of 2646267865 is 5687626462.

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-2646267865 is a prime.

It is a super-2 number, since 2×2646267865² = 14005467226663316450, which contains 22 as substring.

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, 1004871 + ... + 1007500.

It is an arithmetic number, because the mean of its divisors is an integer number (398449656).

Almost surely, 2^2646267865 is an apocalyptic number.

It is an amenable number.

2646267865 is a deficient number, since it is larger than the sum of its proper divisors (541329383).

2646267865 is a wasteful number, since it uses less digits than its factorization.

2646267865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2012639.

The product of its digits is 5806080, while the sum is 52.

The square root of 2646267865 is about 51441.8882332288. Note that the first 3 decimals coincide. The cubic root of 2646267865 is about 1383.1775593048.

The spelling of 2646267865 in words is "two billion, six hundred forty-six million, two hundred sixty-seven thousand, eight hundred sixty-five".