2516691 has 4 divisors (see below), whose sum is σ = 3355592. Its totient is φ = 1677792.

The previous prime is 2516681. The next prime is 2516713. The reversal of 2516691 is 1966152.

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

It is not a de Polignac number, because 2516691 - 2⁵ = 2516659 is a prime.

It is a D-number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2516681) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 419446 + ... + 419451.

It is an arithmetic number, because the mean of its divisors is an integer number (838898).

2^2516691 is an apocalyptic number.

2516691 is a deficient number, since it is larger than the sum of its proper divisors (838901).

2516691 is an equidigital number, since it uses as much as digits as its factorization.

2516691 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 838900.

The product of its digits is 3240, while the sum is 30.

The square root of 2516691 is about 1586.4082072405. The cubic root of 2516691 is about 136.0222534231.

The spelling of 2516691 in words is "two million, five hundred sixteen thousand, six hundred ninety-one".