660867686363 has 2 divisors, whose sum is σ = 660867686364. Its totient is φ = 660867686362.

The previous prime is 660867686351. The next prime is 660867686383. The reversal of 660867686363 is 363686768066.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 660867686363 - 2³⁸ = 385989779419 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 660867686363.

It is not a weakly prime, because it can be changed into another prime (660867686383) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 330433843181 + 330433843182.

It is an arithmetic number, because the mean of its divisors is an integer number (330433843182).

Almost surely, 2^660867686363 is an apocalyptic number.

660867686363 is a deficient number, since it is larger than the sum of its proper divisors (1).

660867686363 is an equidigital number, since it uses as much as digits as its factorization.

660867686363 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 188116992, while the sum is 65.

The spelling of 660867686363 in words is "six hundred sixty billion, eight hundred sixty-seven million, six hundred eighty-six thousand, three hundred sixty-three".