2765091 has 8 divisors (see below), whose sum is σ = 4213504. Its totient is φ = 1580040.

The previous prime is 2765053. The next prime is 2765093. The reversal of 2765091 is 1905672.

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

It is not a de Polignac number, because 2765091 - 2⁹ = 2764579 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2765093) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 65815 + ... + 65856.

It is an arithmetic number, because the mean of its divisors is an integer number (526688).

2^2765091 is an apocalyptic number.

2765091 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

2765091 is a deficient number, since it is larger than the sum of its proper divisors (1448413).

2765091 is a wasteful number, since it uses less digits than its factorization.

2765091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131681.

The product of its (nonzero) digits is 3780, while the sum is 30.

The square root of 2765091 is about 1662.8562776139. The cubic root of 2765091 is about 140.3577753886.

The spelling of 2765091 in words is "two million, seven hundred sixty-five thousand, ninety-one".