68118361 has 4 divisors (see below), whose sum is σ = 70467300. Its totient is φ = 65769424.

The previous prime is 68118359. The next prime is 68118397. The reversal of 68118361 is 16381186.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 16381186 = 2 ⋅8190593.

It can be written as a sum of positive squares in 2 ways, for example, as 18147600 + 49970761 = 4260^2 + 7069^2 .

It is a cyclic number.

It is not a de Polignac number, because 68118361 - 2¹ = 68118359 is a prime.

It is a super-2 number, since 2×68118361² = 9280222210652642, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68118301) 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, 1174426 + ... + 1174483.

It is an arithmetic number, because the mean of its divisors is an integer number (17616825).

Almost surely, 2^68118361 is an apocalyptic number.

It is an amenable number.

68118361 is a deficient number, since it is larger than the sum of its proper divisors (2348939).

68118361 is a wasteful number, since it uses less digits than its factorization.

68118361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2348938.

The product of its digits is 6912, while the sum is 34.

The square root of 68118361 is about 8253.3848207872. The cubic root of 68118361 is about 408.4021909516.

The spelling of 68118361 in words is "sixty-eight million, one hundred eighteen thousand, three hundred sixty-one".