2644545 has 8 divisors (see below), whose sum is σ = 4231296. Its totient is φ = 1410416.

The previous prime is 2644531. The next prime is 2644547. The reversal of 2644545 is 5454462.

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 2644545 - 2⁵ = 2644513 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2644547) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 88137 + ... + 88166.

It is an arithmetic number, because the mean of its divisors is an integer number (528912).

2^2644545 is an apocalyptic number.

It is an amenable number.

2644545 is a deficient number, since it is larger than the sum of its proper divisors (1586751).

2644545 is a wasteful number, since it uses less digits than its factorization.

2644545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 176311.

The product of its digits is 19200, while the sum is 30.

The square root of 2644545 is about 1626.2057065451. The cubic root of 2644545 is about 138.2877319410.

The spelling of 2644545 in words is "two million, six hundred forty-four thousand, five hundred forty-five".