6940165 has 8 divisors (see below), whose sum is σ = 8818200. Its totient is φ = 5225472.

The previous prime is 6940147. The next prime is 6940177. The reversal of 6940165 is 5610496.

It can be written as a sum of positive squares in 4 ways, for example, as 2617924 + 4322241 = 1618^2 + 2079^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a 6-Lehmer number, since φ(6940165) divides (6940165-1)⁶.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6940165 is a prime.

6940165 is a lucky number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 40740 + ... + 40909.

It is an arithmetic number, because the mean of its divisors is an integer number (1102275).

Almost surely, 2^6940165 is an apocalyptic number.

It is an amenable number.

6940165 is a deficient number, since it is larger than the sum of its proper divisors (1878035).

6940165 is a wasteful number, since it uses less digits than its factorization.

6940165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81671.

The product of its (nonzero) digits is 6480, while the sum is 31.

The square root of 6940165 is about 2634.4192908495. The cubic root of 6940165 is about 190.7465091113.

The spelling of 6940165 in words is "six million, nine hundred forty thousand, one hundred sixty-five".