67066157 has 2 divisors, whose sum is σ = 67066158. Its totient is φ = 67066156.

The previous prime is 67066151. The next prime is 67066171. The reversal of 67066157 is 75166076.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 58690921 + 8375236 = 7661^2 + 2894^2 .

It is a cyclic number.

It is not a de Polignac number, because 67066157 - 2⁴ = 67066141 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 67066157.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (67066151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33533078 + 33533079.

It is an arithmetic number, because the mean of its divisors is an integer number (33533079).

Almost surely, 2^67066157 is an apocalyptic number.

It is an amenable number.

67066157 is a deficient number, since it is larger than the sum of its proper divisors (1).

67066157 is an equidigital number, since it uses as much as digits as its factorization.

67066157 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 52920, while the sum is 38.

The square root of 67066157 is about 8189.3929567459. The cubic root of 67066157 is about 406.2884475801.

The spelling of 67066157 in words is "sixty-seven million, sixty-six thousand, one hundred fifty-seven".