67421214 has 64 divisors (see below), whose sum is σ = 172385280. Its totient is φ = 19133280.

The previous prime is 67421213. The next prime is 67421219. The reversal of 67421214 is 41212476.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67421213) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 64879 + ... + 65909.

It is an arithmetic number, because the mean of its divisors is an integer number (2693520).

Almost surely, 2^67421214 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 67421214, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (86192640).

67421214 is an abundant number, since it is smaller than the sum of its proper divisors (104964066).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

67421214 is a wasteful number, since it uses less digits than its factorization.

67421214 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1222 (or 1216 counting only the distinct ones).

The product of its digits is 2688, while the sum is 27.

The square root of 67421214 is about 8211.0421993801. The cubic root of 67421214 is about 407.0041674038.

The spelling of 67421214 in words is "sixty-seven million, four hundred twenty-one thousand, two hundred fourteen".