6653790 has 144 divisors (see below), whose sum is σ = 20913984. Its totient is φ = 1457280.

The previous prime is 6653771. The next prime is 6653797. The reversal of 6653790 is 973566.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6653797) by changing a digit.

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 71 ways as a sum of consecutive naturals, for example, 141547 + ... + 141593.

It is an arithmetic number, because the mean of its divisors is an integer number (145236).

Almost surely, 2^6653790 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6653790, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10456992).

6653790 is an abundant number, since it is smaller than the sum of its proper divisors (14260194).

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

6653790 is a wasteful number, since it uses less digits than its factorization.

6653790 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95 (or 81 counting only the distinct ones).

The product of its (nonzero) digits is 34020, while the sum is 36.

The square root of 6653790 is about 2579.4941364539. The cubic root of 6653790 is about 188.0859536038.

It can be divided in two parts, 6 and 653790, that added together give a triangular number (653796 = T₁₁₄₃).

The spelling of 6653790 in words is "six million, six hundred fifty-three thousand, seven hundred ninety".