4678642 has 4 divisors (see below), whose sum is σ = 7017966. Its totient is φ = 2339320.

The previous prime is 4678631. The next prime is 4678649. The reversal of 4678642 is 2468764.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 4363921 + 314721 = 2089^2 + 561^2 .

It is not an unprimeable number, because it can be changed into a prime (4678649) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1169659 + ... + 1169662.

Almost surely, 2^4678642 is an apocalyptic number.

4678642 is a deficient number, since it is larger than the sum of its proper divisors (2339324).

4678642 is a wasteful number, since it uses less digits than its factorization.

4678642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2339323.

The product of its digits is 64512, while the sum is 37.

The square root of 4678642 is about 2163.0168746452. The cubic root of 4678642 is about 167.2527517212.

The spelling of 4678642 in words is "four million, six hundred seventy-eight thousand, six hundred forty-two".