6423556 has 6 divisors (see below), whose sum is σ = 11241230. Its totient is φ = 3211776.

The previous prime is 6423553. The next prime is 6423559. The reversal of 6423556 is 6553246.

It is an interprime number because it is at equal distance from previous prime (6423553) and next prime (6423559).

It can be written as a sum of positive squares in only one way, i.e., 4910656 + 1512900 = 2216^2 + 1230^2 .

It is not an unprimeable number, because it can be changed into a prime (6423551) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 802941 + ... + 802948.

Almost surely, 2^6423556 is an apocalyptic number.

It is an amenable number.

6423556 is a deficient number, since it is larger than the sum of its proper divisors (4817674).

6423556 is a wasteful number, since it uses less digits than its factorization.

6423556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1605893 (or 1605891 counting only the distinct ones).

The product of its digits is 21600, while the sum is 31.

The square root of 6423556 is about 2534.4735153479. The cubic root of 6423556 is about 185.8910604217.

The spelling of 6423556 in words is "six million, four hundred twenty-three thousand, five hundred fifty-six".