6909420 has 48 divisors (see below), whose sum is σ = 22111488. Its totient is φ = 1579200.

The previous prime is 6909391. The next prime is 6909437. The reversal of 6909420 is 249096.

It is a Harshad number since it is a multiple of its sum of digits (30).

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, 7806 + ... + 8645.

It is an arithmetic number, because the mean of its divisors is an integer number (460656).

Almost surely, 2^6909420 is an apocalyptic number.

6909420 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

6909420 is an abundant number, since it is smaller than the sum of its proper divisors (15202068).

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

6909420 is a wasteful number, since it uses less digits than its factorization.

6909420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16470 (or 16468 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 30.

The square root of 6909420 is about 2628.5775621046. The cubic root of 6909420 is about 190.4644225071.

The spelling of 6909420 in words is "six million, nine hundred nine thousand, four hundred twenty".