6420673349 has 8 divisors (see below), whose sum is σ = 6669915840. Its totient is φ = 6175842400.

The previous prime is 6420673331. The next prime is 6420673379. The reversal of 6420673349 is 9433760246.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 6420673349 - 2⁸ = 6420673093 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6420673309) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1099919 + ... + 1105740.

It is an arithmetic number, because the mean of its divisors is an integer number (833739480).

Almost surely, 2^6420673349 is an apocalyptic number.

It is an amenable number.

6420673349 is a deficient number, since it is larger than the sum of its proper divisors (249242491).

6420673349 is a wasteful number, since it uses less digits than its factorization.

6420673349 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2205771.

The product of its (nonzero) digits is 653184, while the sum is 44.

The square root of 6420673349 is about 80129.1042568179. The cubic root of 6420673349 is about 1858.6324928252.

The spelling of 6420673349 in words is "six billion, four hundred twenty million, six hundred seventy-three thousand, three hundred forty-nine".