68573161 has 4 divisors (see below), whose sum is σ = 68716800. Its totient is φ = 68429524.

The previous prime is 68573159. The next prime is 68573171. The reversal of 68573161 is 16137586.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 16137586 = 2 ⋅8068793.

It is a cyclic number.

It is not a de Polignac number, because 68573161 - 2¹ = 68573159 is a prime.

It is a super-3 number, since 3×68573161³ (a number of 24 digits) contains 333 as substring.

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 68573161.

It is not an unprimeable number, because it can be changed into a prime (68573171) 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, 71101 + ... + 72058.

It is an arithmetic number, because the mean of its divisors is an integer number (17179200).

Almost surely, 2^68573161 is an apocalyptic number.

It is an amenable number.

68573161 is a deficient number, since it is larger than the sum of its proper divisors (143639).

68573161 is a wasteful number, since it uses less digits than its factorization.

68573161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 143638.

The product of its digits is 30240, while the sum is 37.

The square root of 68573161 is about 8280.8913167605. The cubic root of 68573161 is about 409.3090901873.

The spelling of 68573161 in words is "sixty-eight million, five hundred seventy-three thousand, one hundred sixty-one".