2641945 has 8 divisors (see below), whose sum is σ = 3182400. Its totient is φ = 2105520.

The previous prime is 2641939. The next prime is 2641949. The reversal of 2641945 is 5491462.

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

It is not a de Polignac number, because 2641945 - 2⁹ = 2641433 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2641949) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 706 + ... + 2404.

It is an arithmetic number, because the mean of its divisors is an integer number (397800).

2^2641945 is an apocalyptic number.

It is an amenable number.

2641945 is a deficient number, since it is larger than the sum of its proper divisors (540455).

2641945 is a wasteful number, since it uses less digits than its factorization.

2641945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2015.

The product of its digits is 8640, while the sum is 31.

The square root of 2641945 is about 1625.4061031016. The cubic root of 2641945 is about 138.2423976147.

It can be divided in two parts, 264 and 1945, that added together give a square (2209 = 47²).

The spelling of 2641945 in words is "two million, six hundred forty-one thousand, nine hundred forty-five".