2761389 has 6 divisors (see below), whose sum is σ = 3988686. Its totient is φ = 1840920.

The previous prime is 2761379. The next prime is 2761393. The reversal of 2761389 is 9831672.

2761389 is a `hidden beast` number, since 276 + 1 + 389 = 666.

It can be written as a sum of positive squares in only one way, i.e., 2528100 + 233289 = 1590^2 + 483^2 .

It is not a de Polignac number, because 2761389 - 2¹³ = 2753197 is a prime.

It is a Curzon number.

2761389 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2761379) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 153402 + ... + 153419.

It is an arithmetic number, because the mean of its divisors is an integer number (664781).

2^2761389 is an apocalyptic number.

It is an amenable number.

2761389 is a deficient number, since it is larger than the sum of its proper divisors (1227297).

2761389 is a wasteful number, since it uses less digits than its factorization.

2761389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 306827 (or 306824 counting only the distinct ones).

The product of its digits is 18144, while the sum is 36.

The square root of 2761389 is about 1661.7427598759. The cubic root of 2761389 is about 140.2951087897.

It can be divided in two parts, 27 and 61389, that added together give a palindrome (61416).

The spelling of 2761389 in words is "two million, seven hundred sixty-one thousand, three hundred eighty-nine".