68673161 has 4 divisors (see below), whose sum is σ = 69303300. Its totient is φ = 68043024.

The previous prime is 68673133. The next prime is 68673181. The reversal of 68673161 is 16137686.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 16137686 = 2 ⋅8068843.

It can be written as a sum of positive squares in 2 ways, for example, as 58813561 + 9859600 = 7669^2 + 3140^2 .

It is a cyclic number.

It is not a de Polignac number, because 68673161 - 2⁶ = 68673097 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68673181) 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, 314906 + ... + 315123.

It is an arithmetic number, because the mean of its divisors is an integer number (17325825).

Almost surely, 2^68673161 is an apocalyptic number.

It is an amenable number.

68673161 is a deficient number, since it is larger than the sum of its proper divisors (630139).

68673161 is a wasteful number, since it uses less digits than its factorization.

68673161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 630138.

The product of its digits is 36288, while the sum is 38.

The square root of 68673161 is about 8286.9271144375. The cubic root of 68673161 is about 409.5079582190.

The spelling of 68673161 in words is "sixty-eight million, six hundred seventy-three thousand, one hundred sixty-one".