2642636 has 6 divisors (see below), whose sum is σ = 4624620. Its totient is φ = 1321316.

The previous prime is 2642621. The next prime is 2642639. The reversal of 2642636 is 6362462.

It is a junction number, because it is equal to n+sod(n) for n = 2642599 and 2642608.

It is not an unprimeable number, because it can be changed into a prime (2642639) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 330326 + ... + 330333.

It is an arithmetic number, because the mean of its divisors is an integer number (770770).

2^2642636 is an apocalyptic number.

It is an amenable number.

2642636 is a deficient number, since it is larger than the sum of its proper divisors (1981984).

2642636 is a wasteful number, since it uses less digits than its factorization.

2642636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 660663 (or 660661 counting only the distinct ones).

The product of its digits is 10368, while the sum is 29.

The square root of 2642636 is about 1625.6186514678. The cubic root of 2642636 is about 138.2544489847.

It can be divided in two parts, 26426 and 36, that added together give a palindrome (26462).

The spelling of 2642636 in words is "two million, six hundred forty-two thousand, six hundred thirty-six".