6420044 has 12 divisors (see below), whose sum is σ = 11307744. Its totient is φ = 3189264.

The previous prime is 6420041. The next prime is 6420053. The reversal of 6420044 is 4400246.

6420044 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 6419998 and 6420025.

It is not an unprimeable number, because it can be changed into a prime (6420041) 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, 4484 + ... + 5739.

It is an arithmetic number, because the mean of its divisors is an integer number (942312).

Almost surely, 2^6420044 is an apocalyptic number.

It is an amenable number.

6420044 is a deficient number, since it is larger than the sum of its proper divisors (4887700).

6420044 is a wasteful number, since it uses less digits than its factorization.

6420044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10384 (or 10382 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 20.

The square root of 6420044 is about 2533.7805745565. The cubic root of 6420044 is about 185.8571763643.

The spelling of 6420044 in words is "six million, four hundred twenty thousand, forty-four".