6426780 has 96 divisors (see below), whose sum is σ = 19160064. Its totient is φ = 1607424.

The previous prime is 6426757. The next prime is 6426781. The reversal of 6426780 is 876246.

6426780 = T₁₂₉ + T₁₃₀ + ... + T₃₄₃.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6426781) 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, 121234 + ... + 121286.

It is an arithmetic number, because the mean of its divisors is an integer number (199584).

Almost surely, 2^6426780 is an apocalyptic number.

6426780 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 6426780, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9580032).

6426780 is an abundant number, since it is smaller than the sum of its proper divisors (12733284).

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

6426780 is a wasteful number, since it uses less digits than its factorization.

6426780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 155 (or 153 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 33.

The square root of 6426780 is about 2535.1094650922. The cubic root of 6426780 is about 185.9221549608.

The spelling of 6426780 in words is "six million, four hundred twenty-six thousand, seven hundred eighty".