6557790 has 32 divisors (see below), whose sum is σ = 15943680. Its totient is φ = 1725984.

The previous prime is 6557777. The next prime is 6557797. The reversal of 6557790 is 977556.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6557797) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 987 + ... + 3753.

It is an arithmetic number, because the mean of its divisors is an integer number (498240).

Almost surely, 2^6557790 is an apocalyptic number.

6557790 is an abundant number, since it is smaller than the sum of its proper divisors (9385890).

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

6557790 is a wasteful number, since it uses less digits than its factorization.

6557790 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2856.

The product of its (nonzero) digits is 66150, while the sum is 39.

The square root of 6557790 is about 2560.8182286137. The cubic root of 6557790 is about 187.1770083714.

The spelling of 6557790 in words is "six million, five hundred fifty-seven thousand, seven hundred ninety".