6390895 has 32 divisors (see below), whose sum is σ = 9704448. Its totient is φ = 3936768.

The previous prime is 6390893. The next prime is 6390907. The reversal of 6390895 is 5980936.

6390895 = 350² + 351² + ... + 395².

It is a cyclic number.

It is not a de Polignac number, because 6390895 - 2¹ = 6390893 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6390893) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 13452 + ... + 13918.

It is an arithmetic number, because the mean of its divisors is an integer number (303264).

Almost surely, 2^6390895 is an apocalyptic number.

6390895 is a deficient number, since it is larger than the sum of its proper divisors (3313553).

6390895 is a wasteful number, since it uses less digits than its factorization.

6390895 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 519.

The product of its (nonzero) digits is 58320, while the sum is 40.

The square root of 6390895 is about 2528.0219540186. The cubic root of 6390895 is about 185.5754664206.

The spelling of 6390895 in words is "six million, three hundred ninety thousand, eight hundred ninety-five".