2920765 has 4 divisors (see below), whose sum is σ = 3504924. Its totient is φ = 2336608.

The previous prime is 2920751. The next prime is 2920783. The reversal of 2920765 is 5670292.

2920765 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1792921 + 1127844 = 1339^2 + 1062^2 .

It is a cyclic number.

It is not a de Polignac number, because 2920765 - 2⁷ = 2920637 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a d-powerful number, because it can be written as 2²⁰ + 9 + 2²⁰ + 0 + 7⁷ + 6² + 5² .

It is a Duffinian number.

2920765 is a lucky number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 292072 + ... + 292081.

It is an arithmetic number, because the mean of its divisors is an integer number (876231).

2^2920765 is an apocalyptic number.

It is an amenable number.

2920765 is a deficient number, since it is larger than the sum of its proper divisors (584159).

2920765 is an equidigital number, since it uses as much as digits as its factorization.

2920765 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 584158.

The product of its (nonzero) digits is 7560, while the sum is 31.

The square root of 2920765 is about 1709.0245755986. The cubic root of 2920765 is about 142.9438709085.

The spelling of 2920765 in words is "two million, nine hundred twenty thousand, seven hundred sixty-five".