2766021065 has 8 divisors (see below), whose sum is σ = 3359216448. Its totient is φ = 2186156080.

The previous prime is 2766021059. The next prime is 2766021077. The reversal of 2766021065 is 5601206672.

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

It is not a de Polignac number, because 2766021065 - 2⁶ = 2766021001 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, 3332141 + ... + 3332970.

It is an arithmetic number, because the mean of its divisors is an integer number (419902056).

Almost surely, 2^2766021065 is an apocalyptic number.

It is an amenable number.

2766021065 is a deficient number, since it is larger than the sum of its proper divisors (593195383).

2766021065 is an equidigital number, since it uses as much as digits as its factorization.

2766021065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6665199.

The product of its (nonzero) digits is 30240, while the sum is 35.

The square root of 2766021065 is about 52592.9754339874. The cubic root of 2766021065 is about 1403.7351052118.

The spelling of 2766021065 in words is "two billion, seven hundred sixty-six million, twenty-one thousand, sixty-five".