2026645 has 8 divisors (see below), whose sum is σ = 2537856. Its totient is φ = 1550736.

The previous prime is 2026639. The next prime is 2026663. The reversal of 2026645 is 5466202.

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

It is a cyclic number.

It is not a de Polignac number, because 2026645 - 2⁵ = 2026613 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8697 + ... + 8926.

It is an arithmetic number, because the mean of its divisors is an integer number (317232).

2^2026645 is an apocalyptic number.

It is an amenable number.

2026645 is a deficient number, since it is larger than the sum of its proper divisors (511211).

2026645 is a wasteful number, since it uses less digits than its factorization.

2026645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17651.

The product of its (nonzero) digits is 2880, while the sum is 25.

The square root of 2026645 is about 1423.6028238241. The cubic root of 2026645 is about 126.5491484671.

It can be divided in two parts, 20 and 26645, that multiplied together give a square (532900 = 730²).

The spelling of 2026645 in words is "two million, twenty-six thousand, six hundred forty-five".