6420924 has 24 divisors (see below), whose sum is σ = 16647120. Its totient is φ = 2140272.

The previous prime is 6420913. The next prime is 6420959. The reversal of 6420924 is 4290246.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29619 + ... + 29834.

It is an arithmetic number, because the mean of its divisors is an integer number (693630).

Almost surely, 2^6420924 is an apocalyptic number.

It is an amenable number.

6420924 is an abundant number, since it is smaller than the sum of its proper divisors (10226196).

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

6420924 is a wasteful number, since it uses less digits than its factorization.

6420924 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59466 (or 59458 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

The square root of 6420924 is about 2533.9542221595. The cubic root of 6420924 is about 185.8656678348.

The spelling of 6420924 in words is "six million, four hundred twenty thousand, nine hundred twenty-four".