2078643 has 24 divisors (see below), whose sum is σ = 3304704. Its totient is φ = 1138320.

The previous prime is 2078627. The next prime is 2078647. The reversal of 2078643 is 3468702.

It is not a de Polignac number, because 2078643 - 2⁴ = 2078627 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2078643.

It is not an unprimeable number, because it can be changed into a prime (2078647) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 20130 + ... + 20232.

It is an arithmetic number, because the mean of its divisors is an integer number (137696).

2^2078643 is an apocalyptic number.

2078643 is a deficient number, since it is larger than the sum of its proper divisors (1226061).

2078643 is a wasteful number, since it uses less digits than its factorization.

2078643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 175 (or 144 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 30.

The square root of 2078643 is about 1441.7499783250. The cubic root of 2078643 is about 127.6223201358.

The spelling of 2078643 in words is "two million, seventy-eight thousand, six hundred forty-three".