67082981 has 8 divisors (see below), whose sum is σ = 77923584. Its totient is φ = 56556720.

The previous prime is 67082963. The next prime is 67082987. The reversal of 67082981 is 18928076.

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 67082981 - 2¹⁰ = 67081957 is a prime.

It is a super-2 number, since 2×67082981² = 9000252679692722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67082987) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 78125 + ... + 78978.

It is an arithmetic number, because the mean of its divisors is an integer number (9740448).

Almost surely, 2^67082981 is an apocalyptic number.

67082981 is a gapful number since it is divisible by the number (61) formed by its first and last digit.

It is an amenable number.

67082981 is a deficient number, since it is larger than the sum of its proper divisors (10840603).

67082981 is a wasteful number, since it uses less digits than its factorization.

67082981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 157171.

The product of its (nonzero) digits is 48384, while the sum is 41.

The square root of 67082981 is about 8190.4200746970. The cubic root of 67082981 is about 406.3224181432.

The spelling of 67082981 in words is "sixty-seven million, eighty-two thousand, nine hundred eighty-one".