2680691 has 8 divisors (see below), whose sum is σ = 3039120. Its totient is φ = 2344032.

The previous prime is 2680681. The next prime is 2680693. The reversal of 2680691 is 1960862.

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

It is a cyclic number.

It is not a de Polignac number, because 2680691 - 2¹⁰ = 2679667 is a prime.

It is a super-2 number, since 2×2680691² = 14372208474962, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2680693) 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 7 ways as a sum of consecutive naturals, for example, 5180 + ... + 5673.

It is an arithmetic number, because the mean of its divisors is an integer number (379890).

2^2680691 is an apocalyptic number.

2680691 is a deficient number, since it is larger than the sum of its proper divisors (358429).

2680691 is a wasteful number, since it uses less digits than its factorization.

2680691 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10885.

The product of its (nonzero) digits is 5184, while the sum is 32.

The square root of 2680691 is about 1637.2815884875. The cubic root of 2680691 is about 138.9149281904.

The spelling of 2680691 in words is "two million, six hundred eighty thousand, six hundred ninety-one".