67220394 has 16 divisors (see below), whose sum is σ = 134669568. Its totient is φ = 22368672.

The previous prime is 67220383. The next prime is 67220399. The reversal of 67220394 is 49302276.

It is not an unprimeable number, because it can be changed into a prime (67220399) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5587 + ... + 12870.

It is an arithmetic number, because the mean of its divisors is an integer number (8416848).

Almost surely, 2^67220394 is an apocalyptic number.

67220394 is an abundant number, since it is smaller than the sum of its proper divisors (67449174).

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

67220394 is a wasteful number, since it uses less digits than its factorization.

67220394 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19069.

The product of its (nonzero) digits is 18144, while the sum is 33.

The square root of 67220394 is about 8198.8044250366. The cubic root of 67220394 is about 406.5996663187.

The spelling of 67220394 in words is "sixty-seven million, two hundred twenty thousand, three hundred ninety-four".