6629988 has 24 divisors (see below), whose sum is σ = 15513120. Its totient is φ = 2203840.

The previous prime is 6629969. The next prime is 6630011. The reversal of 6629988 is 8899266.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6343 + ... + 7313.

It is an arithmetic number, because the mean of its divisors is an integer number (646380).

Almost surely, 2^6629988 is an apocalyptic number.

It is an amenable number.

6629988 is an abundant number, since it is smaller than the sum of its proper divisors (8883132).

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

6629988 is a wasteful number, since it uses less digits than its factorization.

6629988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1547 (or 1545 counting only the distinct ones).

The product of its digits is 373248, while the sum is 48.

The square root of 6629988 is about 2574.8763077088. The cubic root of 6629988 is about 187.8614113666.

The spelling of 6629988 in words is "six million, six hundred twenty-nine thousand, nine hundred eighty-eight".