6507345420 has 144 divisors (see below), whose sum is σ = 19948612320. Its totient is φ = 1716968448.

The previous prime is 6507345413. The next prime is 6507345421. The reversal of 6507345420 is 245437056.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (6507345421) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 11558059 + ... + 11558621.

It is an arithmetic number, because the mean of its divisors is an integer number (138532030).

Almost surely, 2^6507345420 is an apocalyptic number.

6507345420 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 6507345420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9974306160).

6507345420 is an abundant number, since it is smaller than the sum of its proper divisors (13441266900).

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

6507345420 is a wasteful number, since it uses less digits than its factorization.

6507345420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1144 (or 1139 counting only the distinct ones).

The product of its (nonzero) digits is 100800, while the sum is 36.

The square root of 6507345420 is about 80668.1189814167. The cubic root of 6507345420 is about 1866.9583102284.

The spelling of 6507345420 in words is "six billion, five hundred seven million, three hundred forty-five thousand, four hundred twenty".