67305481 has 4 divisors (see below), whose sum is σ = 67363092. Its totient is φ = 67247872.

The previous prime is 67305463. The next prime is 67305493. The reversal of 67305481 is 18450376.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 37711881 + 29593600 = 6141^2 + 5440^2 .

It is a cyclic number.

It is not a de Polignac number, because 67305481 - 2¹³ = 67297289 is a prime.

It is a super-2 number, since 2×67305481² = 9060055545282722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (67305421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27016 + ... + 29401.

It is an arithmetic number, because the mean of its divisors is an integer number (16840773).

Almost surely, 2^67305481 is an apocalyptic number.

It is an amenable number.

67305481 is a deficient number, since it is larger than the sum of its proper divisors (57611).

67305481 is a wasteful number, since it uses less digits than its factorization.

67305481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57610.

The product of its (nonzero) digits is 20160, while the sum is 34.

The square root of 67305481 is about 8203.9917723021. The cubic root of 67305481 is about 406.7711507783.

The spelling of 67305481 in words is "sixty-seven million, three hundred five thousand, four hundred eighty-one".