2691642 has 8 divisors (see below), whose sum is σ = 5383296. Its totient is φ = 897212.

The previous prime is 2691641. The next prime is 2691659. The reversal of 2691642 is 2461962.

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

2691642 is an admirable number.

It is a d-powerful number, because it can be written as 2 + 6 + 9⁶ + 1 + 6⁶ + 4⁷ + 2²¹ .

It is not an unprimeable number, because it can be changed into a prime (2691641) 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, 224298 + ... + 224309.

It is an arithmetic number, because the mean of its divisors is an integer number (672912).

2^2691642 is an apocalyptic number.

2691642 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2691642 is a wasteful number, since it uses less digits than its factorization.

2691642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 448612.

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

The square root of 2691642 is about 1640.6224428552. The cubic root of 2691642 is about 139.1038335324.

It can be divided in two parts, 2691 and 642, that added together give a palindrome (3333).

The spelling of 2691642 in words is "two million, six hundred ninety-one thousand, six hundred forty-two".