67999481 has 8 divisors (see below), whose sum is σ = 74294400. Its totient is φ = 61723440.

The previous prime is 67999453. The next prime is 67999501. The reversal of 67999481 is 18499976.

It is a happy number.

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 67999481 - 2⁶ = 67999417 is a prime.

It is a super-2 number, since 2×67999481² = 9247858832538722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (67999411) 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, 3440 + ... + 12158.

It is an arithmetic number, because the mean of its divisors is an integer number (9286800).

Almost surely, 2^67999481 is an apocalyptic number.

It is an amenable number.

67999481 is a deficient number, since it is larger than the sum of its proper divisors (6294919).

67999481 is a wasteful number, since it uses less digits than its factorization.

67999481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9439.

The product of its digits is 979776, while the sum is 53.

The square root of 67999481 is about 8246.1797821779. The cubic root of 67999481 is about 408.1644717680.

The spelling of 67999481 in words is "sixty-seven million, nine hundred ninety-nine thousand, four hundred eighty-one".