67413921 has 8 divisors (see below), whose sum is σ = 90051744. Its totient is φ = 44859360.

The previous prime is 67413911. The next prime is 67413923. The reversal of 67413921 is 12931476.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 67413921 - 2⁷ = 67413793 is a prime.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (67413923) 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, 18900 + ... + 22181.

It is an arithmetic number, because the mean of its divisors is an integer number (11256468).

Almost surely, 2^67413921 is an apocalyptic number.

It is an amenable number.

67413921 is a deficient number, since it is larger than the sum of its proper divisors (22637823).

67413921 is a wasteful number, since it uses less digits than its factorization.

67413921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41631.

The product of its digits is 9072, while the sum is 33.

The square root of 67413921 is about 8210.5980902733. The cubic root of 67413921 is about 406.9894915658.

The spelling of 67413921 in words is "sixty-seven million, four hundred thirteen thousand, nine hundred twenty-one".