67438481 has 8 divisors (see below), whose sum is σ = 75364128. Its totient is φ = 59812000.

The previous prime is 67438477. The next prime is 67438493. The reversal of 67438481 is 18483476.

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 67438481 - 2² = 67438477 is a prime.

It is a super-2 number, since 2×67438481² = 9095897439174722, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (41).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (67438411) 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, 74315 + ... + 75216.

It is an arithmetic number, because the mean of its divisors is an integer number (9420516).

Almost surely, 2^67438481 is an apocalyptic number.

It is an amenable number.

67438481 is a deficient number, since it is larger than the sum of its proper divisors (7925647).

67438481 is a wasteful number, since it uses less digits than its factorization.

67438481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 149583.

The product of its digits is 129024, while the sum is 41.

The square root of 67438481 is about 8212.0935820289. The cubic root of 67438481 is about 407.0389098865.

The spelling of 67438481 in words is "sixty-seven million, four hundred thirty-eight thousand, four hundred eighty-one".