67870161 has 6 divisors (see below), whose sum is σ = 98034690. Its totient is φ = 45246768.

The previous prime is 67870151. The next prime is 67870169. The reversal of 67870161 is 16107876.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 62110161 + 5760000 = 7881^2 + 2400^2 .

It is not a de Polignac number, because 67870161 - 2⁶ = 67870097 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is not an unprimeable number, because it can be changed into a prime (67870169) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3770556 + ... + 3770573.

It is an arithmetic number, because the mean of its divisors is an integer number (16339115).

Almost surely, 2^67870161 is an apocalyptic number.

It is an amenable number.

67870161 is a deficient number, since it is larger than the sum of its proper divisors (30164529).

67870161 is a wasteful number, since it uses less digits than its factorization.

67870161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7541135 (or 7541132 counting only the distinct ones).

The product of its (nonzero) digits is 14112, while the sum is 36.

The square root of 67870161 is about 8238.3348438868. The cubic root of 67870161 is about 407.9055613314.

The spelling of 67870161 in words is "sixty-seven million, eight hundred seventy thousand, one hundred sixty-one".