2642651 has 16 divisors (see below), whose sum is σ = 3049728. Its totient is φ = 2268000.

The previous prime is 2642639. The next prime is 2642693. The reversal of 2642651 is 1562462.

2642651 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 2642651 - 2⁶ = 2642587 is a prime.

It is a Smith number, since the sum of its digits (26) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 2642651.

It is not an unprimeable number, because it can be changed into a prime (2642621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17426 + ... + 17576.

It is an arithmetic number, because the mean of its divisors is an integer number (190608).

2^2642651 is an apocalyptic number.

2642651 is a deficient number, since it is larger than the sum of its proper divisors (407077).

2642651 is a wasteful number, since it uses less digits than its factorization.

2642651 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 242.

The product of its digits is 2880, while the sum is 26.

The square root of 2642651 is about 1625.6232650894. The cubic root of 2642651 is about 138.2547105685.

The spelling of 2642651 in words is "two million, six hundred forty-two thousand, six hundred fifty-one".