67145 has 8 divisors (see below), whose sum is σ = 86856. Its totient is φ = 49536.

The previous prime is 67141. The next prime is 67153. The reversal of 67145 is 54176.

It can be written as a sum of positive squares in 4 ways, for example, as 11449 + 55696 = 107^2 + 236^2 .

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 67145 - 2² = 67141 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 67145.

It is not an unprimeable number, because it can be changed into a prime (67141) 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, 452 + ... + 581.

It is an arithmetic number, because the mean of its divisors is an integer number (10857).

2⁶⁷¹⁴⁵ is an apocalyptic number.

67145 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

It is an amenable number.

67145 is a deficient number, since it is larger than the sum of its proper divisors (19711).

67145 is a wasteful number, since it uses less digits than its factorization.

67145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1051.

The product of its digits is 840, while the sum is 23.

The square root of 67145 is about 259.1235226682. The cubic root of 67145 is about 40.6447596183.

It can be divided in two parts, 67 and 145, that added together give a palindrome (212).

The spelling of 67145 in words is "sixty-seven thousand, one hundred forty-five".