667070377 has 2 divisors, whose sum is σ = 667070378. Its totient is φ = 667070376.

The previous prime is 667070363. The next prime is 667070387. The reversal of 667070377 is 773070766.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 657204496 + 9865881 = 25636^2 + 3141^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-667070377 is a prime.

It is not a weakly prime, because it can be changed into another prime (667070387) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 333535188 + 333535189.

It is an arithmetic number, because the mean of its divisors is an integer number (333535189).

Almost surely, 2^667070377 is an apocalyptic number.

It is an amenable number.

667070377 is a deficient number, since it is larger than the sum of its proper divisors (1).

667070377 is an equidigital number, since it uses as much as digits as its factorization.

667070377 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 259308, while the sum is 43.

The square root of 667070377 is about 25827.7056085127. The cubic root of 667070377 is about 873.7567658841.

The spelling of 667070377 in words is "six hundred sixty-seven million, seventy thousand, three hundred seventy-seven".