6620766 has 8 divisors (see below), whose sum is σ = 13241544. Its totient is φ = 2206920.

The previous prime is 6620741. The next prime is 6620771. The reversal of 6620766 is 6670266.

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

6620766 is an admirable number.

It is a Curzon 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, 551725 + ... + 551736.

It is an arithmetic number, because the mean of its divisors is an integer number (1655193).

Almost surely, 2^6620766 is an apocalyptic number.

6620766 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.

6620766 is a wasteful number, since it uses less digits than its factorization.

6620766 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1103466.

The product of its (nonzero) digits is 18144, while the sum is 33.

The square root of 6620766 is about 2573.0849189251. The cubic root of 6620766 is about 187.7742688352.

The spelling of 6620766 in words is "six million, six hundred twenty thousand, seven hundred sixty-six".