6493805646 has 8 divisors (see below), whose sum is σ = 12987611304. Its totient is φ = 2164601880.

The previous prime is 6493805627. The next prime is 6493805699. The reversal of 6493805646 is 6465083946.

It is a happy number.

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

6493805646 is an admirable number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 541150465 + ... + 541150476.

It is an arithmetic number, because the mean of its divisors is an integer number (1623451413).

Almost surely, 2^6493805646 is an apocalyptic number.

6493805646 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

6493805646 is a wasteful number, since it uses less digits than its factorization.

6493805646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1082300946.

The product of its (nonzero) digits is 3732480, while the sum is 51.

The square root of 6493805646 is about 80584.1525735675. The cubic root of 6493805646 is about 1865.6625567742.

The spelling of 6493805646 in words is "six billion, four hundred ninety-three million, eight hundred five thousand, six hundred forty-six".