67215045 has 8 divisors (see below), whose sum is σ = 107544096. Its totient is φ = 35848016.

The previous prime is 67215041. The next prime is 67215053. The reversal of 67215045 is 54051276.

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

It is a cyclic number.

It is not a de Polignac number, because 67215045 - 2² = 67215041 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67215041) 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, 2240487 + ... + 2240516.

It is an arithmetic number, because the mean of its divisors is an integer number (13443012).

Almost surely, 2^67215045 is an apocalyptic number.

It is an amenable number.

67215045 is a deficient number, since it is larger than the sum of its proper divisors (40329051).

67215045 is a wasteful number, since it uses less digits than its factorization.

67215045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4481011.

The product of its (nonzero) digits is 8400, while the sum is 30.

The square root of 67215045 is about 8198.4782124489. The cubic root of 67215045 is about 406.5888811032.

The spelling of 67215045 in words is "sixty-seven million, two hundred fifteen thousand, forty-five".