2642691 has 16 divisors (see below), whose sum is σ = 3767040. Its totient is φ = 1643040.

The previous prime is 2642639. The next prime is 2642693. The reversal of 2642691 is 1962462.

It is not a de Polignac number, because 2642691 - 2⁹ = 2642179 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2642693) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3721 + ... + 4373.

It is an arithmetic number, because the mean of its divisors is an integer number (235440).

2^2642691 is an apocalyptic number.

2642691 is a deficient number, since it is larger than the sum of its proper divisors (1124349).

2642691 is a wasteful number, since it uses less digits than its factorization.

2642691 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 746.

The product of its digits is 5184, while the sum is 30.

The square root of 2642691 is about 1625.6355680164. The cubic root of 2642691 is about 138.2554081207.

It can be divided in two parts, 2642 and 691, that added together give a palindrome (3333).

The spelling of 2642691 in words is "two million, six hundred forty-two thousand, six hundred ninety-one".