2765423 has 4 divisors (see below), whose sum is σ = 2778048. Its totient is φ = 2752800.

The previous prime is 2765419. The next prime is 2765429. The reversal of 2765423 is 3245672.

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

It is a cyclic number.

It is not a de Polignac number, because 2765423 - 2² = 2765419 is a prime.

It is a d-powerful number, because it can be written as 2 + 7³ + 6⁷ + 5⁹ + 4³ + 2⁹ + 3¹² .

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2765429) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5978 + ... + 6423.

It is an arithmetic number, because the mean of its divisors is an integer number (694512).

2^2765423 is an apocalyptic number.

2765423 is a deficient number, since it is larger than the sum of its proper divisors (12625).

2765423 is a wasteful number, since it uses less digits than its factorization.

2765423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12624.

The product of its digits is 10080, while the sum is 29.

The square root of 2765423 is about 1662.9561028482. The cubic root of 2765423 is about 140.3633926740.

Subtracting 2765423 from its reverse (3245672), we obtain a square (480249 = 693²).

The spelling of 2765423 in words is "two million, seven hundred sixty-five thousand, four hundred twenty-three".