123660853 has 2 divisors, whose sum is σ = 123660854. Its totient is φ = 123660852.

The previous prime is 123660809. The next prime is 123660869. The reversal of 123660853 is 358066321.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 120626289 + 3034564 = 10983^2 + 1742^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-123660853 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (123660883) 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, 61830426 + 61830427.

It is an arithmetic number, because the mean of its divisors is an integer number (61830427).

Almost surely, 2^123660853 is an apocalyptic number.

It is an amenable number.

123660853 is a deficient number, since it is larger than the sum of its proper divisors (1).

123660853 is an equidigital number, since it uses as much as digits as its factorization.

123660853 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 25920, while the sum is 34.

The square root of 123660853 is about 11120.2901490923. The cubic root of 123660853 is about 498.2080562137.

The spelling of 123660853 in words is "one hundred twenty-three million, six hundred sixty thousand, eight hundred fifty-three".