67880981 has 8 divisors (see below), whose sum is σ = 80951424. Its totient is φ = 55653840.

The previous prime is 67880971. The next prime is 67881001. The reversal of 67880981 is 18908876.

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 67880981 - 2¹⁰ = 67879957 is a prime.

It is a super-2 number, since 2×67880981² = 9215655163044722, 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 (67880921) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 210650 + ... + 210971.

It is an arithmetic number, because the mean of its divisors is an integer number (10118928).

Almost surely, 2^67880981 is an apocalyptic number.

It is an amenable number.

67880981 is a deficient number, since it is larger than the sum of its proper divisors (13070443).

67880981 is a wasteful number, since it uses less digits than its factorization.

67880981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 421651.

The product of its (nonzero) digits is 193536, while the sum is 47.

The square root of 67880981 is about 8238.9915038189. The cubic root of 67880981 is about 407.9272365594.

The spelling of 67880981 in words is "sixty-seven million, eight hundred eighty thousand, nine hundred eighty-one".