6627990 has 16 divisors (see below), whose sum is σ = 15907248. Its totient is φ = 1767456.

The previous prime is 6627989. The next prime is 6627991. The reversal of 6627990 is 997266.

It is an interprime number because it is at equal distance from previous prime (6627989) and next prime (6627991).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6627991) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 110437 + ... + 110496.

It is an arithmetic number, because the mean of its divisors is an integer number (994203).

Almost surely, 2^6627990 is an apocalyptic number.

6627990 is an abundant number, since it is smaller than the sum of its proper divisors (9279258).

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

6627990 is a wasteful number, since it uses less digits than its factorization.

6627990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 220943.

The product of its (nonzero) digits is 40824, while the sum is 39.

The square root of 6627990 is about 2574.4882986722. The cubic root of 6627990 is about 187.8425382901.

The spelling of 6627990 in words is "six million, six hundred twenty-seven thousand, nine hundred ninety".