6650940 has 24 divisors (see below), whose sum is σ = 18622800. Its totient is φ = 1773568.

The previous prime is 6650929. The next prime is 6650971. The reversal of 6650940 is 490566.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 6650898 and 6650907.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 55365 + ... + 55484.

It is an arithmetic number, because the mean of its divisors is an integer number (775950).

Almost surely, 2^6650940 is an apocalyptic number.

6650940 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

6650940 is an abundant number, since it is smaller than the sum of its proper divisors (11971860).

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

6650940 is a wasteful number, since it uses less digits than its factorization.

6650940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110861 (or 110859 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 30.

The square root of 6650940 is about 2578.9416433878. The cubic root of 6650940 is about 188.0590956517.

The spelling of 6650940 in words is "six million, six hundred fifty thousand, nine hundred forty".