67421473 has 8 divisors (see below), whose sum is σ = 81585792. Its totient is φ = 54390336.

The previous prime is 67421461. The next prime is 67421521. The reversal of 67421473 is 37412476.

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

It is a de Polignac number, because none of the positive numbers 2^k-67421473 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (67421273) 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, 283165 + ... + 283402.

It is an arithmetic number, because the mean of its divisors is an integer number (10198224).

Almost surely, 2^67421473 is an apocalyptic number.

It is an amenable number.

67421473 is a deficient number, since it is larger than the sum of its proper divisors (14164319).

67421473 is a wasteful number, since it uses less digits than its factorization.

67421473 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 566591.

The product of its digits is 28224, while the sum is 34.

The square root of 67421473 is about 8211.0579708099. The cubic root of 67421473 is about 407.0046885748.

The spelling of 67421473 in words is "sixty-seven million, four hundred twenty-one thousand, four hundred seventy-three".