67140317 has 4 divisors (see below), whose sum is σ = 67290300. Its totient is φ = 66990336.

The previous prime is 67140313. The next prime is 67140323. The reversal of 67140317 is 71304176.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 45508516 + 21631801 = 6746^2 + 4651^2 .

It is a cyclic number.

It is not a de Polignac number, because 67140317 - 2² = 67140313 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 67140317.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67140313) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 74318 + ... + 75215.

It is an arithmetic number, because the mean of its divisors is an integer number (16822575).

Almost surely, 2^67140317 is an apocalyptic number.

It is an amenable number.

67140317 is a deficient number, since it is larger than the sum of its proper divisors (149983).

67140317 is a wasteful number, since it uses less digits than its factorization.

67140317 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 149982.

The product of its (nonzero) digits is 3528, while the sum is 29.

The square root of 67140317 is about 8193.9195138835. The cubic root of 67140317 is about 406.4381467908.

The spelling of 67140317 in words is "sixty-seven million, one hundred forty thousand, three hundred seventeen".