6400662 has 8 divisors (see below), whose sum is σ = 12801336. Its totient is φ = 2133552.

The previous prime is 6400657. The next prime is 6400697. The reversal of 6400662 is 2660046.

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

6400662 is an admirable number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 533383 + ... + 533394.

It is an arithmetic number, because the mean of its divisors is an integer number (1600167).

Almost surely, 2^6400662 is an apocalyptic number.

6400662 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.

6400662 is a wasteful number, since it uses less digits than its factorization.

6400662 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1066782.

The product of its (nonzero) digits is 1728, while the sum is 24.

The square root of 6400662 is about 2529.9529639896. The cubic root of 6400662 is about 185.6699546484.

The spelling of 6400662 in words is "six million, four hundred thousand, six hundred sixty-two".