6457420 has 12 divisors (see below), whose sum is σ = 13560624. Its totient is φ = 2582960.

The previous prime is 6457417. The next prime is 6457421. The reversal of 6457420 is 247546.

It is not an unprimeable number, because it can be changed into a prime (6457421) 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, 161416 + ... + 161455.

It is an arithmetic number, because the mean of its divisors is an integer number (1130052).

Almost surely, 2^6457420 is an apocalyptic number.

It is an amenable number.

6457420 is an abundant number, since it is smaller than the sum of its proper divisors (7103204).

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

6457420 is a wasteful number, since it uses less digits than its factorization.

6457420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 322880 (or 322878 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 28.

The square root of 6457420 is about 2541.1454110302. The cubic root of 6457420 is about 186.2171510916.

The spelling of 6457420 in words is "six million, four hundred fifty-seven thousand, four hundred twenty".