6650406 has 48 divisors (see below), whose sum is σ = 16833024. Its totient is φ = 1858032.

The previous prime is 6650393. The next prime is 6650431. The reversal of 6650406 is 6040566.

6650406 is a `hidden beast` number, since 6 + 650 + 4 + 0 + 6 = 666.

6650406 is digitally balanced in base 8, because in such base it contains all the possibile digits an equal number of times.

6650406 is strictly pandigital in base 8.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 6650406.

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, 5361 + ... + 6483.

It is an arithmetic number, because the mean of its divisors is an integer number (350688).

Almost surely, 2^6650406 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6650406, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8416512).

6650406 is an abundant number, since it is smaller than the sum of its proper divisors (10182618).

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

6650406 is a wasteful number, since it uses less digits than its factorization.

6650406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1185 (or 1182 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 27.

The square root of 6650406 is about 2578.8381104676. The cubic root of 6650406 is about 188.0540624662.

It can be divided in two parts, 6650 and 406, that added together give a square (7056 = 84²).

The spelling of 6650406 in words is "six million, six hundred fifty thousand, four hundred six".