2162691 has 12 divisors (see below), whose sum is σ = 3155568. Its totient is φ = 1427184.

The previous prime is 2162681. The next prime is 2162717. The reversal of 2162691 is 1962612.

It is not a de Polignac number, because 2162691 - 2⁵ = 2162659 is a prime.

It is a super-2 number, since 2×2162691² = 9354464722962, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2162651) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 240 + ... + 2093.

It is an arithmetic number, because the mean of its divisors is an integer number (262964).

2^2162691 is an apocalyptic number.

2162691 is a deficient number, since it is larger than the sum of its proper divisors (992877).

2162691 is a wasteful number, since it uses less digits than its factorization.

2162691 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2442 (or 2439 counting only the distinct ones).

The product of its digits is 1296, while the sum is 27.

The square root of 2162691 is about 1470.6090574996. The cubic root of 2162691 is about 129.3197404557.

The spelling of 2162691 in words is "two million, one hundred sixty-two thousand, six hundred ninety-one".