6653406 has 16 divisors (see below), whose sum is σ = 13736448. Its totient is φ = 2146200.

The previous prime is 6653399. The next prime is 6653411. The reversal of 6653406 is 6043566.

It is a super-2 number, since 2×6653406² = 88535622801672, which contains 22 as substring.

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, 17700 + ... + 18071.

It is an arithmetic number, because the mean of its divisors is an integer number (858528).

Almost surely, 2^6653406 is an apocalyptic number.

6653406 is an abundant number, since it is smaller than the sum of its proper divisors (7083042).

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

6653406 is a wasteful number, since it uses less digits than its factorization.

6653406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35807.

The product of its (nonzero) digits is 12960, while the sum is 30.

The square root of 6653406 is about 2579.4197021811. The cubic root of 6653406 is about 188.0823352953.

The spelling of 6653406 in words is "six million, six hundred fifty-three thousand, four hundred six".