6445087 has 4 divisors (see below), whose sum is σ = 7031016. Its totient is φ = 5859160.

The previous prime is 6445079. The next prime is 6445093. The reversal of 6445087 is 7805446.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 6445087 - 2³ = 6445079 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6449087) 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 3 ways as a sum of consecutive naturals, for example, 292948 + ... + 292969.

It is an arithmetic number, because the mean of its divisors is an integer number (1757754).

Almost surely, 2^6445087 is an apocalyptic number.

6445087 is a deficient number, since it is larger than the sum of its proper divisors (585929).

6445087 is a wasteful number, since it uses less digits than its factorization.

6445087 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 585928.

The product of its (nonzero) digits is 26880, while the sum is 34.

The square root of 6445087 is about 2538.7175896503. The cubic root of 6445087 is about 186.0985237463.

The spelling of 6445087 in words is "six million, four hundred forty-five thousand, eighty-seven".