67224881 has 2 divisors, whose sum is σ = 67224882. Its totient is φ = 67224880.

The previous prime is 67224863. The next prime is 67224923. The reversal of 67224881 is 18842276.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 66912400 + 312481 = 8180^2 + 559^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-67224881 is a prime.

It is a super-2 number, since 2×67224881² = 9038369250928322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (67224821) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33612440 + 33612441.

It is an arithmetic number, because the mean of its divisors is an integer number (33612441).

Almost surely, 2^67224881 is an apocalyptic number.

It is an amenable number.

67224881 is a deficient number, since it is larger than the sum of its proper divisors (1).

67224881 is an equidigital number, since it uses as much as digits as its factorization.

67224881 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 43008, while the sum is 38.

The square root of 67224881 is about 8199.0780579282. The cubic root of 67224881 is about 406.6087130380.

The spelling of 67224881 in words is "sixty-seven million, two hundred twenty-four thousand, eight hundred eighty-one".