67312145 has 16 divisors (see below), whose sum is σ = 84627072. Its totient is φ = 51300480.

The previous prime is 67312127. The next prime is 67312151. The reversal of 67312145 is 54121376.

It is not a de Polignac number, because 67312145 - 2⁶ = 67312081 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 31274 + ... + 33356.

It is an arithmetic number, because the mean of its divisors is an integer number (5289192).

Almost surely, 2^67312145 is an apocalyptic number.

It is an amenable number.

67312145 is a deficient number, since it is larger than the sum of its proper divisors (17314927).

67312145 is a wasteful number, since it uses less digits than its factorization.

67312145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2392.

The product of its digits is 5040, while the sum is 29.

The square root of 67312145 is about 8204.3979060014. The cubic root of 67312145 is about 406.7845753090.

The spelling of 67312145 in words is "sixty-seven million, three hundred twelve thousand, one hundred forty-five".