2664565815 has 8 divisors (see below), whose sum is σ = 4263305328. Its totient is φ = 1421101760.

The previous prime is 2664565811. The next prime is 2664565817. The reversal of 2664565815 is 5185654662.

2664565815 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 2664565815 - 2² = 2664565811 is a prime.

It is a super-2 number, since 2×2664565815² = 14199821964933228450, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2664565811) 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, 88818846 + ... + 88818875.

It is an arithmetic number, because the mean of its divisors is an integer number (532913166).

Almost surely, 2^2664565815 is an apocalyptic number.

2664565815 is a deficient number, since it is larger than the sum of its proper divisors (1598739513).

2664565815 is a wasteful number, since it uses less digits than its factorization.

2664565815 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 177637729.

The product of its digits is 1728000, while the sum is 48.

The square root of 2664565815 is about 51619.4325327197. The cubic root of 2664565815 is about 1386.3582907308.

The spelling of 2664565815 in words is "two billion, six hundred sixty-four million, five hundred sixty-five thousand, eight hundred fifteen".