67071157 has 2 divisors, whose sum is σ = 67071158. Its totient is φ = 67071156.

The previous prime is 67071149. The next prime is 67071217. The reversal of 67071157 is 75117076.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 45037521 + 22033636 = 6711^2 + 4694^2 .

It is a cyclic number.

It is not a de Polignac number, because 67071157 - 2³ = 67071149 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (67071127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33535578 + 33535579.

It is an arithmetic number, because the mean of its divisors is an integer number (33535579).

Almost surely, 2^67071157 is an apocalyptic number.

It is an amenable number.

67071157 is a deficient number, since it is larger than the sum of its proper divisors (1).

67071157 is an equidigital number, since it uses as much as digits as its factorization.

67071157 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10290, while the sum is 34.

The square root of 67071157 is about 8189.6982239885. The cubic root of 67071157 is about 406.2985440374.

The spelling of 67071157 in words is "sixty-seven million, seventy-one thousand, one hundred fifty-seven".