67645145 has 8 divisors (see below), whose sum is σ = 81262656. Its totient is φ = 54057136.

The previous prime is 67645141. The next prime is 67645183. The reversal of 67645145 is 54154676.

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

It is not a de Polignac number, because 67645145 - 2² = 67645141 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 67645099 and 67645108.

It is not an unprimeable number, because it can be changed into a prime (67645141) 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, 1967 + ... + 11796.

It is an arithmetic number, because the mean of its divisors is an integer number (10157832).

Almost surely, 2^67645145 is an apocalyptic number.

It is an amenable number.

67645145 is a deficient number, since it is larger than the sum of its proper divisors (13617511).

67645145 is a wasteful number, since it uses less digits than its factorization.

67645145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14751.

The product of its digits is 100800, while the sum is 38.

The square root of 67645145 is about 8224.6668625544. Note that the first 3 decimals coincide. The cubic root of 67645145 is about 407.4542736652.

The spelling of 67645145 in words is "sixty-seven million, six hundred forty-five thousand, one hundred forty-five".