6439654 has 16 divisors (see below), whose sum is σ = 10456992. Its totient is φ = 2956608.

The previous prime is 6439639. The next prime is 6439679. The reversal of 6439654 is 4569346.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5527 + ... + 6589.

It is an arithmetic number, because the mean of its divisors is an integer number (653562).

Almost surely, 2^6439654 is an apocalyptic number.

6439654 is a deficient number, since it is larger than the sum of its proper divisors (4017338).

6439654 is a wasteful number, since it uses less digits than its factorization.

6439654 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1311.

The product of its digits is 77760, while the sum is 37.

The square root of 6439654 is about 2537.6473356241. The cubic root of 6439654 is about 186.0462173661.

The spelling of 6439654 in words is "six million, four hundred thirty-nine thousand, six hundred fifty-four".