2642765 has 8 divisors (see below), whose sum is σ = 3204600. Its totient is φ = 2092032.

The previous prime is 2642713. The next prime is 2642771. The reversal of 2642765 is 5672462.

It can be written as a sum of positive squares in 4 ways, for example, as 11881 + 2630884 = 109^2 + 1622^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 2642765 - 2¹⁸ = 2380621 is a prime.

It is a congruent 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, 2240 + ... + 3209.

It is an arithmetic number, because the mean of its divisors is an integer number (400575).

2^2642765 is an apocalyptic number.

It is an amenable number.

2642765 is a deficient number, since it is larger than the sum of its proper divisors (561835).

2642765 is an equidigital number, since it uses as much as digits as its factorization.

2642765 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5551.

The product of its digits is 20160, while the sum is 32.

The square root of 2642765 is about 1625.6583281858. The cubic root of 2642765 is about 138.2566985735.

The spelling of 2642765 in words is "two million, six hundred forty-two thousand, seven hundred sixty-five".