6784140420 has 60 divisors (see below), whose sum is σ = 21282104844. Its totient is φ = 1809103680.

The previous prime is 6784140413. The next prime is 6784140431. The reversal of 6784140420 is 240414876.

It can be written as a sum of positive squares in 2 ways, for example, as 1432925316 + 5351215104 = 37854^2 + 73152^2 .

It is a tau number, because it is divible by the number of its divisors (60).

It is a super-2 number, since 2×6784140420² = 92049122476555552800, which contains 22 as substring.

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

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 2092251 + ... + 2095490.

Almost surely, 2^6784140420 is an apocalyptic number.

6784140420 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

6784140420 is an abundant number, since it is smaller than the sum of its proper divisors (14497964424).

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

6784140420 is a wasteful number, since it uses less digits than its factorization.

6784140420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4187762 (or 4187751 counting only the distinct ones).

The product of its (nonzero) digits is 43008, while the sum is 36.

The square root of 6784140420 is about 82365.8935482400. The cubic root of 6784140420 is about 1893.0624575975.

The spelling of 6784140420 in words is "six billion, seven hundred eighty-four million, one hundred forty thousand, four hundred twenty".