3478643 has 4 divisors (see below), whose sum is σ = 3975600. Its totient is φ = 2981688.

The previous prime is 3478627. The next prime is 3478661. The reversal of 3478643 is 3468743.

3478643 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 3478643 - 2⁴ = 3478627 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3478663) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 248468 + ... + 248481.

It is an arithmetic number, because the mean of its divisors is an integer number (993900).

Almost surely, 2^3478643 is an apocalyptic number.

3478643 is a deficient number, since it is larger than the sum of its proper divisors (496957).

3478643 is an equidigital number, since it uses as much as digits as its factorization.

3478643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 496956.

The product of its digits is 48384, while the sum is 35.

The square root of 3478643 is about 1865.1120609765. The cubic root of 3478643 is about 151.5199972151.

The spelling of 3478643 in words is "three million, four hundred seventy-eight thousand, six hundred forty-three".