67591161 has 12 divisors (see below), whose sum is σ = 106507440. Its totient is φ = 40964280.

The previous prime is 67591159. The next prime is 67591171. The reversal of 67591161 is 16119576.

It is a happy number.

67591161 is a `hidden beast` number, since 6 + 7 + 591 + 1 + 61 = 666.

It is not a de Polignac number, because 67591161 - 2¹ = 67591159 is a prime.

It is not an unprimeable number, because it can be changed into a prime (67591171) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 341271 + ... + 341468.

It is an arithmetic number, because the mean of its divisors is an integer number (8875620).

Almost surely, 2^67591161 is an apocalyptic number.

It is an amenable number.

67591161 is a deficient number, since it is larger than the sum of its proper divisors (38916279).

67591161 is a wasteful number, since it uses less digits than its factorization.

67591161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 682756 (or 682753 counting only the distinct ones).

The product of its digits is 11340, while the sum is 36.

The square root of 67591161 is about 8221.3843724765. The cubic root of 67591161 is about 407.3458556091.

The spelling of 67591161 in words is "sixty-seven million, five hundred ninety-one thousand, one hundred sixty-one".