6390687 has 8 divisors (see below), whose sum is σ = 8681904. Its totient is φ = 4179968.

The previous prime is 6390679. The next prime is 6390689. The reversal of 6390687 is 7860936.

6390687 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 6390687 - 2³ = 6390679 is a prime.

It is a zygodrome in base 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6390689) 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, 19938 + ... + 20255.

It is an arithmetic number, because the mean of its divisors is an integer number (1085238).

Almost surely, 2^6390687 is an apocalyptic number.

6390687 is a deficient number, since it is larger than the sum of its proper divisors (2291217).

6390687 is a wasteful number, since it uses less digits than its factorization.

6390687 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40249.

The product of its (nonzero) digits is 54432, while the sum is 39.

The square root of 6390687 is about 2527.9808148006. The cubic root of 6390687 is about 185.5734531337.

The spelling of 6390687 in words is "six million, three hundred ninety thousand, six hundred eighty-seven".