6403642 has 8 divisors (see below), whose sum is σ = 10977696. Its totient is φ = 2744412.

The previous prime is 6403601. The next prime is 6403643. The reversal of 6403642 is 2463046.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (6403643) 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, 228688 + ... + 228715.

It is an arithmetic number, because the mean of its divisors is an integer number (1372212).

Almost surely, 2^6403642 is an apocalyptic number.

6403642 is a deficient number, since it is larger than the sum of its proper divisors (4574054).

6403642 is a wasteful number, since it uses less digits than its factorization.

6403642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 457412.

The product of its (nonzero) digits is 3456, while the sum is 25.

The square root of 6403642 is about 2530.5418392115. The cubic root of 6403642 is about 185.6987647215.

Adding to 6403642 its reverse (2463046), we get a palindrome (8866688).

The spelling of 6403642 in words is "six million, four hundred three thousand, six hundred forty-two".