67982065 has 8 divisors (see below), whose sum is σ = 86377320. Its totient is φ = 51186432.

The previous prime is 67982051. The next prime is 67982077. The reversal of 67982065 is 56028976.

It can be written as a sum of positive squares in 4 ways, for example, as 14531344 + 53450721 = 3812^2 + 7311^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 67982065 - 2⁷ = 67981937 is a prime.

It is a super-2 number, since 2×67982065² = 9243122323328450, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 399810 + ... + 399979.

It is an arithmetic number, because the mean of its divisors is an integer number (10797165).

Almost surely, 2^67982065 is an apocalyptic number.

It is an amenable number.

67982065 is a deficient number, since it is larger than the sum of its proper divisors (18395255).

67982065 is a wasteful number, since it uses less digits than its factorization.

67982065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 799811.

The product of its (nonzero) digits is 181440, while the sum is 43.

The square root of 67982065 is about 8245.1237104121. The cubic root of 67982065 is about 408.1296224853.

The spelling of 67982065 in words is "sixty-seven million, nine hundred eighty-two thousand, sixty-five".