2765729 has 4 divisors (see below), whose sum is σ = 2781360. Its totient is φ = 2750100.

The previous prime is 2765689. The next prime is 2765731. The reversal of 2765729 is 9275672.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2765729 - 2⁸ = 2765473 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 2765692 and 2765701.

It is not an unprimeable number, because it can be changed into a prime (2765779) 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, 7547 + ... + 7904.

It is an arithmetic number, because the mean of its divisors is an integer number (695340).

2^2765729 is an apocalyptic number.

It is an amenable number.

2765729 is a deficient number, since it is larger than the sum of its proper divisors (15631).

2765729 is a wasteful number, since it uses less digits than its factorization.

2765729 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15630.

The product of its digits is 52920, while the sum is 38.

The square root of 2765729 is about 1663.0481051371. The cubic root of 2765729 is about 140.3685696535.

It can be divided in two parts, 27 and 65729, that added together give a palindrome (65756).

The spelling of 2765729 in words is "two million, seven hundred sixty-five thousand, seven hundred twenty-nine".