67982165 has 4 divisors (see below), whose sum is σ = 81578604. Its totient is φ = 54385728.

The previous prime is 67982149. The next prime is 67982207. The reversal of 67982165 is 56128976.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 46812964 + 21169201 = 6842^2 + 4601^2 .

It is a cyclic number.

It is not a de Polignac number, because 67982165 - 2⁴ = 67982149 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6798212 + ... + 6798221.

It is an arithmetic number, because the mean of its divisors is an integer number (20394651).

Almost surely, 2^67982165 is an apocalyptic number.

It is an amenable number.

67982165 is a deficient number, since it is larger than the sum of its proper divisors (13596439).

67982165 is a wasteful number, since it uses less digits than its factorization.

67982165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13596438.

The product of its digits is 181440, while the sum is 44.

The square root of 67982165 is about 8245.1297746003. The cubic root of 67982165 is about 408.1298226015.

The spelling of 67982165 in words is "sixty-seven million, nine hundred eighty-two thousand, one hundred sixty-five".