3440643 has 4 divisors (see below), whose sum is σ = 4587528. Its totient is φ = 2293760.

The previous prime is 3440627. The next prime is 3440663. The reversal of 3440643 is 3460443.

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 3440643 - 2⁴ = 3440627 is a prime.

It is a D-number.

It is not an unprimeable number, because it can be changed into a prime (3440603) 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, 573438 + ... + 573443.

It is an arithmetic number, because the mean of its divisors is an integer number (1146882).

Almost surely, 2^3440643 is an apocalyptic number.

3440643 is a deficient number, since it is larger than the sum of its proper divisors (1146885).

3440643 is a wasteful number, since it uses less digits than its factorization.

3440643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1146884.

The product of its (nonzero) digits is 3456, while the sum is 24.

The square root of 3440643 is about 1854.8970321826. The cubic root of 3440643 is about 150.9662512475.

The spelling of 3440643 in words is "three million, four hundred forty thousand, six hundred forty-three".