2739691 has 6 divisors (see below), whose sum is σ = 2864540. Its totient is φ = 2620068.

The previous prime is 2739683. The next prime is 2739701. The reversal of 2739691 is 1969372.

It is not a de Polignac number, because 2739691 - 2³ = 2739683 is a prime.

It is a Duffinian number.

2739691 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 2739691.

It is not an unprimeable number, because it can be changed into a prime (2739631) 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, 2061 + ... + 3118.

2^2739691 is an apocalyptic number.

2739691 is a deficient number, since it is larger than the sum of its proper divisors (124849).

2739691 is an equidigital number, since it uses as much as digits as its factorization.

2739691 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5225 (or 5202 counting only the distinct ones).

The product of its digits is 20412, while the sum is 37.

The square root of 2739691 is about 1655.2011962296. The cubic root of 2739691 is about 139.9266792943.

The spelling of 2739691 in words is "two million, seven hundred thirty-nine thousand, six hundred ninety-one".