67272281 has 8 divisors (see below), whose sum is σ = 71792640. Its totient is φ = 62814528.

The previous prime is 67272259. The next prime is 67272311. The reversal of 67272281 is 18227276.

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 67272281 - 2¹⁴ = 67255897 is a prime.

It is a super-3 number, since 3×67272281³ (a number of 24 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (67272241) 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, 13421 + ... + 17738.

It is an arithmetic number, because the mean of its divisors is an integer number (8974080).

Almost surely, 2^67272281 is an apocalyptic number.

It is an amenable number.

67272281 is a deficient number, since it is larger than the sum of its proper divisors (4520359).

67272281 is a wasteful number, since it uses less digits than its factorization.

67272281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31303.

The product of its digits is 18816, while the sum is 35.

The square root of 67272281 is about 8201.9681174703. The cubic root of 67272281 is about 406.7042566555.

The spelling of 67272281 in words is "sixty-seven million, two hundred seventy-two thousand, two hundred eighty-one".