67021345 has 8 divisors (see below), whose sum is σ = 81789120. Its totient is φ = 52708080.

The previous prime is 67021343. The next prime is 67021363. The reversal of 67021345 is 54312076.

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

It is not a de Polignac number, because 67021345 - 2¹ = 67021343 is a prime.

It is not an unprimeable number, because it can be changed into a prime (67021343) 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, 113301 + ... + 113890.

It is an arithmetic number, because the mean of its divisors is an integer number (10223640).

Almost surely, 2^67021345 is an apocalyptic number.

It is an amenable number.

67021345 is a deficient number, since it is larger than the sum of its proper divisors (14767775).

67021345 is a wasteful number, since it uses less digits than its factorization.

67021345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 227255.

The product of its (nonzero) digits is 5040, while the sum is 28.

The square root of 67021345 is about 8186.6565214378. The cubic root of 67021345 is about 406.1979366811.

The spelling of 67021345 in words is "sixty-seven million, twenty-one thousand, three hundred forty-five".