67416481 has 8 divisors (see below), whose sum is σ = 74154528. Its totient is φ = 61286500.

The previous prime is 67416457. The next prime is 67416491. The reversal of 67416481 is 18461476.

It is a happy number.

It is not a de Polignac number, because 67416481 - 2⁷ = 67416353 is a prime.

It is a super-2 number, since 2×67416481² = 9089963820846722, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 67416481.

It is not an unprimeable number, because it can be changed into a prime (67416421) 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, 23995 + ... + 26656.

It is an arithmetic number, because the mean of its divisors is an integer number (9269316).

Almost surely, 2^67416481 is an apocalyptic number.

It is an amenable number.

67416481 is a deficient number, since it is larger than the sum of its proper divisors (6738047).

67416481 is an equidigital number, since it uses as much as digits as its factorization.

67416481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50684 (or 50662 counting only the distinct ones).

The product of its digits is 32256, while the sum is 37.

The square root of 67416481 is about 8210.7539848664. The cubic root of 67416481 is about 406.9946432214.

The spelling of 67416481 in words is "sixty-seven million, four hundred sixteen thousand, four hundred eighty-one".