6656845 has 16 divisors (see below), whose sum is σ = 8789760. Its totient is φ = 4809024.

The previous prime is 6656833. The next prime is 6656857. The reversal of 6656845 is 5486566.

It is an interprime number because it is at equal distance from previous prime (6656833) and next prime (6656857).

It is a cyclic number.

It is not a de Polignac number, because 6656845 - 2¹⁵ = 6624077 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 6656798 and 6656807.

It is a congruent 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, 1966 + ... + 4144.

It is an arithmetic number, because the mean of its divisors is an integer number (549360).

Almost surely, 2^6656845 is an apocalyptic number.

6656845 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

It is an amenable number.

6656845 is a deficient number, since it is larger than the sum of its proper divisors (2132915).

6656845 is a wasteful number, since it uses less digits than its factorization.

6656845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2244.

The product of its digits is 172800, while the sum is 40.

The square root of 6656845 is about 2580.0862388688. The cubic root of 6656845 is about 188.1147349285.

The spelling of 6656845 in words is "six million, six hundred fifty-six thousand, eight hundred forty-five".