6656745 has 16 divisors (see below), whose sum is σ = 11211840. Its totient is φ = 3363264.

The previous prime is 6656743. The next prime is 6656753. The reversal of 6656745 is 5476566.

It is not a de Polignac number, because 6656745 - 2¹ = 6656743 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (6656743) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11394 + ... + 11963.

It is an arithmetic number, because the mean of its divisors is an integer number (700740).

Almost surely, 2^6656745 is an apocalyptic number.

It is an amenable number.

6656745 is a deficient number, since it is larger than the sum of its proper divisors (4555095).

6656745 is a wasteful number, since it uses less digits than its factorization.

6656745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23384.

The product of its digits is 151200, while the sum is 39.

The square root of 6656745 is about 2580.0668595988. The cubic root of 6656745 is about 188.1137929623.

The spelling of 6656745 in words is "six million, six hundred fifty-six thousand, seven hundred forty-five".