670166377 has 2 divisors, whose sum is σ = 670166378. Its totient is φ = 670166376.

The previous prime is 670166369. The next prime is 670166381. The reversal of 670166377 is 773661076.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 522762496 + 147403881 = 22864^2 + 12141^2 .

It is a cyclic number.

It is not a de Polignac number, because 670166377 - 2³ = 670166369 is a prime.

It is a super-2 number, since 2×670166377² = 898245945722612258, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (670166317) 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, 335083188 + 335083189.

It is an arithmetic number, because the mean of its divisors is an integer number (335083189).

Almost surely, 2^670166377 is an apocalyptic number.

It is an amenable number.

670166377 is a deficient number, since it is larger than the sum of its proper divisors (1).

670166377 is an equidigital number, since it uses as much as digits as its factorization.

670166377 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 222264, while the sum is 43.

The square root of 670166377 is about 25887.5718637341. The cubic root of 670166377 is about 875.1064369026.

The spelling of 670166377 in words is "six hundred seventy million, one hundred sixty-six thousand, three hundred seventy-seven".