6557705 has 16 divisors (see below), whose sum is σ = 9811584. Its totient is φ = 4087680.

The previous prime is 6557693. The next prime is 6557723. The reversal of 6557705 is 5077556.

It is not a de Polignac number, because 6557705 - 2⁴ = 6557689 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a Duffinian number.

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, 8132 + ... + 8901.

It is an arithmetic number, because the mean of its divisors is an integer number (613224).

Almost surely, 2^6557705 is an apocalyptic number.

It is an amenable number.

6557705 is a deficient number, since it is larger than the sum of its proper divisors (3253879).

6557705 is a wasteful number, since it uses less digits than its factorization.

6557705 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17056.

The product of its (nonzero) digits is 36750, while the sum is 35.

The square root of 6557705 is about 2560.8016323019. The cubic root of 6557705 is about 187.1761996582.

The spelling of 6557705 in words is "six million, five hundred fifty-seven thousand, seven hundred five".