6430620 has 96 divisors (see below), whose sum is σ = 20998656. Its totient is φ = 1440000.

The previous prime is 6430597. The next prime is 6430621. The reversal of 6430620 is 260346.

6430620 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6430621) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 25495 + ... + 25745.

It is an arithmetic number, because the mean of its divisors is an integer number (218736).

Almost surely, 2^6430620 is an apocalyptic number.

6430620 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6430620, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10499328).

6430620 is an abundant number, since it is smaller than the sum of its proper divisors (14568036).

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

6430620 is a wasteful number, since it uses less digits than its factorization.

6430620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 331 (or 329 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 21.

The square root of 6430620 is about 2535.8667157404. The cubic root of 6430620 is about 185.9591770740.

Adding to 6430620 its reverse (260346), we get a palindrome (6690966).

The spelling of 6430620 in words is "six million, four hundred thirty thousand, six hundred twenty".