2691493 has 8 divisors (see below), whose sum is σ = 3106688. Its totient is φ = 2283984.

The previous prime is 2691467. The next prime is 2691517. The reversal of 2691493 is 3941962.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2691493 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2691433) 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, 1146 + ... + 2587.

It is an arithmetic number, because the mean of its divisors is an integer number (388336).

2^2691493 is an apocalyptic number.

It is an amenable number.

2691493 is a deficient number, since it is larger than the sum of its proper divisors (415195).

2691493 is a wasteful number, since it uses less digits than its factorization.

2691493 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3843.

The product of its digits is 11664, while the sum is 34.

The square root of 2691493 is about 1640.5770326321. The cubic root of 2691493 is about 139.1012667158.

It can be divided in two parts, 26 and 91493, that added together give a palindrome (91519).

The spelling of 2691493 in words is "two million, six hundred ninety-one thousand, four hundred ninety-three".