6673421340 has 72 divisors (see below), whose sum is σ = 20321617680. Its totient is φ = 1772642304.

The previous prime is 6673421327. The next prime is 6673421351. The reversal of 6673421340 is 431243766.

It is a happy number.

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

It is a junction number, because it is equal to n+sod(n) for n = 6673421295 and 6673421304.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 25870 + ... + 118389.

It is an arithmetic number, because the mean of its divisors is an integer number (282244690).

Almost surely, 2^6673421340 is an apocalyptic number.

6673421340 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

6673421340 is an abundant number, since it is smaller than the sum of its proper divisors (13648196340).

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

6673421340 is a wasteful number, since it uses less digits than its factorization.

6673421340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 144531 (or 144526 counting only the distinct ones).

The product of its (nonzero) digits is 72576, while the sum is 36.

The square root of 6673421340 is about 81691.0113782416. The cubic root of 6673421340 is about 1882.7074823031.

The spelling of 6673421340 in words is "six billion, six hundred seventy-three million, four hundred twenty-one thousand, three hundred forty".