67157117 has 4 divisors (see below), whose sum is σ = 67177500. Its totient is φ = 67136736.

The previous prime is 67157107. The next prime is 67157137. The reversal of 67157117 is 71175176.

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 45010681 + 22146436 = 6709^2 + 4706^2 .

It is a cyclic number.

It is not a de Polignac number, because 67157117 - 2¹⁸ = 66894973 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67157107) 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, 3992 + ... + 12257.

It is an arithmetic number, because the mean of its divisors is an integer number (16794375).

Almost surely, 2^67157117 is an apocalyptic number.

It is an amenable number.

67157117 is a deficient number, since it is larger than the sum of its proper divisors (20383).

67157117 is a wasteful number, since it uses less digits than its factorization.

67157117 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20382.

The product of its digits is 10290, while the sum is 35.

The square root of 67157117 is about 8194.9446001788. The cubic root of 67157117 is about 406.4720439172.

The spelling of 67157117 in words is "sixty-seven million, one hundred fifty-seven thousand, one hundred seventeen".