6409620 has 72 divisors (see below), whose sum is σ = 22224384. Its totient is φ = 1464768.

The previous prime is 6409607. The next prime is 6409633. The reversal of 6409620 is 269046.

It is an interprime number because it is at equal distance from previous prime (6409607) and next prime (6409633).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1284 + ... + 3803.

It is an arithmetic number, because the mean of its divisors is an integer number (308672).

Almost surely, 2^6409620 is an apocalyptic number.

6409620 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

6409620 is an abundant number, since it is smaller than the sum of its proper divisors (15814764).

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

6409620 is a wasteful number, since it uses less digits than its factorization.

6409620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5109 (or 5104 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 27.

The square root of 6409620 is about 2531.7227336342. The cubic root of 6409620 is about 185.7565319501.

The spelling of 6409620 in words is "six million, four hundred nine thousand, six hundred twenty".