6625554 has 32 divisors (see below), whose sum is σ = 14382144. Its totient is φ = 2022720.

The previous prime is 6625519. The next prime is 6625571. The reversal of 6625554 is 4555266.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13249 + ... + 13739.

It is an arithmetic number, because the mean of its divisors is an integer number (449442).

Almost surely, 2^6625554 is an apocalyptic number.

6625554 is an abundant number, since it is smaller than the sum of its proper divisors (7756590).

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

6625554 is a wasteful number, since it uses less digits than its factorization.

6625554 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 682.

The product of its digits is 36000, while the sum is 33.

The square root of 6625554 is about 2574.0151514706. The cubic root of 6625554 is about 187.8195227408.

It can be divided in two parts, 662 and 5554, that added together give a triangular number (6216 = T₁₁₁).

The spelling of 6625554 in words is "six million, six hundred twenty-five thousand, five hundred fifty-four".