2913691 has 4 divisors (see below), whose sum is σ = 3178584. Its totient is φ = 2648800.

The previous prime is 2913641. The next prime is 2913697. The reversal of 2913691 is 1963192.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 2913691 - 2⁷ = 2913563 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2913697) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 132430 + ... + 132451.

It is an arithmetic number, because the mean of its divisors is an integer number (794646).

2^2913691 is an apocalyptic number.

2913691 is a deficient number, since it is larger than the sum of its proper divisors (264893).

2913691 is a wasteful number, since it uses less digits than its factorization.

2913691 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 264892.

The product of its digits is 2916, while the sum is 31.

The square root of 2913691 is about 1706.9537193492. The cubic root of 2913691 is about 142.8283757790.

The spelling of 2913691 in words is "two million, nine hundred thirteen thousand, six hundred ninety-one".