8420670 has 24 divisors (see below), whose sum is σ = 21893976. Its totient is φ = 2245488.

The previous prime is 8420669. The next prime is 8420677. The reversal of 8420670 is 760248.

8420670 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8420677) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 46692 + ... + 46871.

It is an arithmetic number, because the mean of its divisors is an integer number (912249).

Almost surely, 2^8420670 is an apocalyptic number.

8420670 is an abundant number, since it is smaller than the sum of its proper divisors (13473306).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

8420670 is a wasteful number, since it uses less digits than its factorization.

8420670 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93576 (or 93573 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 27.

The square root of 8420670 is about 2901.8390720369. The cubic root of 8420670 is about 203.4458721876.

The spelling of 8420670 in words is "eight million, four hundred twenty thousand, six hundred seventy".