2765731 has 2 divisors, whose sum is σ = 2765732. Its totient is φ = 2765730.

The previous prime is 2765689. The next prime is 2765753. The reversal of 2765731 is 1375672.

2765731 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2765731 - 2⁹ = 2765219 is a prime.

It is a super-2 number, since 2×2765731² = 15298535928722, which contains 22 as substring.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 2765693 and 2765702.

It is not a weakly prime, because it can be changed into another prime (2765771) by changing a digit.

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 as a sum of consecutive naturals, namely, 1382865 + 1382866.

It is an arithmetic number, because the mean of its divisors is an integer number (1382866).

2^2765731 is an apocalyptic number.

2765731 is a deficient number, since it is larger than the sum of its proper divisors (1).

2765731 is an equidigital number, since it uses as much as digits as its factorization.

2765731 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8820, while the sum is 31.

The square root of 2765731 is about 1663.0487064425. The cubic root of 2765731 is about 140.3686034887.

The spelling of 2765731 in words is "two million, seven hundred sixty-five thousand, seven hundred thirty-one".