6420670 has 32 divisors (see below), whose sum is σ = 12441600. Its totient is φ = 2378016.

The previous prime is 6420599. The next prime is 6420683. The reversal of 6420670 is 760246.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8571 + ... + 9289.

It is an arithmetic number, because the mean of its divisors is an integer number (388800).

Almost surely, 2^6420670 is an apocalyptic number.

6420670 is a deficient number, since it is larger than the sum of its proper divisors (6020930).

6420670 is a wasteful number, since it uses less digits than its factorization.

6420670 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 792.

The product of its (nonzero) digits is 2016, while the sum is 25.

The square root of 6420670 is about 2533.9041023685. The cubic root of 6420670 is about 185.8632169673.

The spelling of 6420670 in words is "six million, four hundred twenty thousand, six hundred seventy".