2642659 has 4 divisors (see below), whose sum is σ = 2651416. Its totient is φ = 2633904.

The previous prime is 2642639. The next prime is 2642693. The reversal of 2642659 is 9562462.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2642659 - 2⁹ = 2642147 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2642609) 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, 3909 + ... + 4534.

It is an arithmetic number, because the mean of its divisors is an integer number (662854).

2^2642659 is an apocalyptic number.

2642659 is a deficient number, since it is larger than the sum of its proper divisors (8757).

2642659 is an equidigital number, since it uses as much as digits as its factorization.

2642659 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8756.

The product of its digits is 25920, while the sum is 34.

The square root of 2642659 is about 1625.6257256823. The cubic root of 2642659 is about 138.2548500795.

The spelling of 2642659 in words is "two million, six hundred forty-two thousand, six hundred fifty-nine".