6445655 has 12 divisors (see below), whose sum is σ = 8165592. Its totient is φ = 4883760.

The previous prime is 6445639. The next prime is 6445661. The reversal of 6445655 is 5565446.

6445655 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 6445655 - 2⁴ = 6445639 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 20 + ... + 3590.

It is an arithmetic number, because the mean of its divisors is an integer number (680466).

Almost surely, 2^6445655 is an apocalyptic number.

6445655 is a deficient number, since it is larger than the sum of its proper divisors (1719937).

6445655 is a wasteful number, since it uses less digits than its factorization.

With its predecessor (6445654) it forms a Ruth-Aaron pair, since the sum of their prime factors is the same (3614).

6445655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3614 (or 3595 counting only the distinct ones).

The product of its digits is 72000, while the sum is 35.

The square root of 6445655 is about 2538.8294546897. The cubic root of 6445655 is about 186.1039904869.

The spelling of 6445655 in words is "six million, four hundred forty-five thousand, six hundred fifty-five".