2645043 has 4 divisors (see below), whose sum is σ = 3526728. Its totient is φ = 1763360.

The previous prime is 2645011. The next prime is 2645051. The reversal of 2645043 is 3405462.

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 2645043 - 2⁵ = 2645011 is a prime.

It is a D-number.

It is not an unprimeable number, because it can be changed into a prime (2645063) 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, 440838 + ... + 440843.

It is an arithmetic number, because the mean of its divisors is an integer number (881682).

2^2645043 is an apocalyptic number.

2645043 is a deficient number, since it is larger than the sum of its proper divisors (881685).

2645043 is an equidigital number, since it uses as much as digits as its factorization.

2645043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 881684.

The product of its (nonzero) digits is 2880, while the sum is 24.

The square root of 2645043 is about 1626.3588164978. The cubic root of 2645043 is about 138.2964118170.

The spelling of 2645043 in words is "two million, six hundred forty-five thousand, forty-three".