660377 has 2 divisors, whose sum is σ = 660378. Its totient is φ = 660376.

The previous prime is 660367. The next prime is 660379. The reversal of 660377 is 773066.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 456976 + 203401 = 676^2 + 451^2 .

It is a cyclic number.

It is not a de Polignac number, because 660377 - 2¹⁰ = 659353 is a prime.

Together with 660379, it forms a pair of twin primes.

It is a Chen prime.

It is equal to p₅₃₅₉₇ and since 660377 and 53597 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (660379) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 330188 + 330189.

It is an arithmetic number, because the mean of its divisors is an integer number (330189).

2⁶⁶⁰³⁷⁷ is an apocalyptic number.

It is an amenable number.

660377 is a deficient number, since it is larger than the sum of its proper divisors (1).

660377 is an equidigital number, since it uses as much as digits as its factorization.

660377 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5292, while the sum is 29.

The square root of 660377 is about 812.6358347993. The cubic root of 660377 is about 87.0824514510.

The spelling of 660377 in words is "six hundred sixty thousand, three hundred seventy-seven".