6687620 has 24 divisors (see below), whose sum is σ = 14784000. Its totient is φ = 2534112.

The previous prime is 6687617. The next prime is 6687623. The reversal of 6687620 is 267866.

It is an interprime number because it is at equal distance from previous prime (6687617) and next prime (6687623).

It is a super-2 number, since 2×6687620² = 89448522528800, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6687623) 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, 8420 + ... + 9179.

It is an arithmetic number, because the mean of its divisors is an integer number (616000).

Almost surely, 2^6687620 is an apocalyptic number.

It is an amenable number.

6687620 is an abundant number, since it is smaller than the sum of its proper divisors (8096380).

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

6687620 is a wasteful number, since it uses less digits than its factorization.

6687620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17627 (or 17625 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 35.

The square root of 6687620 is about 2586.0433097688. The cubic root of 6687620 is about 188.4041779748.

The spelling of 6687620 in words is "six million, six hundred eighty-seven thousand, six hundred twenty".