6455985 has 16 divisors (see below), whose sum is σ = 10779264. Its totient is φ = 3293312.

The previous prime is 6455963. The next prime is 6456001. The reversal of 6455985 is 5895546.

6455985 = T₁₃₉ + T₁₄₀ + ... + T₃₄₅.

It is a cyclic number.

It is not a de Polignac number, because 6455985 - 2⁷ = 6455857 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9012 + ... + 9701.

It is an arithmetic number, because the mean of its divisors is an integer number (673704).

Almost surely, 2^6455985 is an apocalyptic number.

It is an amenable number.

6455985 is a deficient number, since it is larger than the sum of its proper divisors (4323279).

6455985 is a wasteful number, since it uses less digits than its factorization.

6455985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18744.

The product of its digits is 216000, while the sum is 42.

The square root of 6455985 is about 2540.8630423539. The cubic root of 6455985 is about 186.2033560358.

The spelling of 6455985 in words is "six million, four hundred fifty-five thousand, nine hundred eighty-five".