6678165 has 32 divisors (see below), whose sum is σ = 12015360. Its totient is φ = 3142656.

The previous prime is 6678157. The next prime is 6678173. The reversal of 6678165 is 5618766.

It is an interprime number because it is at equal distance from previous prime (6678157) and next prime (6678173).

It is not a de Polignac number, because 6678165 - 2³ = 6678157 is a prime.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3741 + ... + 5229.

It is an arithmetic number, because the mean of its divisors is an integer number (375480).

Almost surely, 2^6678165 is an apocalyptic number.

6678165 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

It is an amenable number.

6678165 is a deficient number, since it is larger than the sum of its proper divisors (5337195).

6678165 is a wasteful number, since it uses less digits than its factorization.

6678165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1533.

The product of its digits is 60480, while the sum is 39.

The square root of 6678165 is about 2584.2145808737. The cubic root of 6678165 is about 188.3153470872.

It can be divided in two parts, 6678 and 165, that multiplied together give a triangular number (1101870 = T₁₄₈₄).

The spelling of 6678165 in words is "six million, six hundred seventy-eight thousand, one hundred sixty-five".