6429620 has 24 divisors (see below), whose sum is σ = 13833288. Its totient is φ = 2508800.

The previous prime is 6429613. The next prime is 6429641. The reversal of 6429620 is 269246.

It can be written as a sum of positive squares in 4 ways, for example, as 8464 + 6421156 = 92^2 + 2534^2 .

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 7 ways as a sum of consecutive naturals, for example, 3101 + ... + 4740.

It is an arithmetic number, because the mean of its divisors is an integer number (576387).

Almost surely, 2^6429620 is an apocalyptic number.

It is an amenable number.

6429620 is an abundant number, since it is smaller than the sum of its proper divisors (7403668).

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

6429620 is a wasteful number, since it uses less digits than its factorization.

6429620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7891 (or 7889 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 29.

The square root of 6429620 is about 2535.6695368285. The cubic root of 6429620 is about 185.9495373183.

The spelling of 6429620 in words is "six million, four hundred twenty-nine thousand, six hundred twenty".