6687090 has 32 divisors (see below), whose sum is σ = 17832960. Its totient is φ = 1783152.

The previous prime is 6687077. The next prime is 6687097. The reversal of 6687090 is 907866.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (6687097) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12114 + ... + 12653.

It is an arithmetic number, because the mean of its divisors is an integer number (557280).

Almost surely, 2^6687090 is an apocalyptic number.

6687090 is an abundant number, since it is smaller than the sum of its proper divisors (11145870).

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

6687090 is a wasteful number, since it uses less digits than its factorization.

6687090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24783 (or 24777 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 36.

The square root of 6687090 is about 2585.9408345900. The cubic root of 6687090 is about 188.3992007755.

The spelling of 6687090 in words is "six million, six hundred eighty-seven thousand, ninety".