123361666 has 16 divisors (see below), whose sum is σ = 186973920. Its totient is φ = 61040160.

The previous prime is 123361649. The next prime is 123361669. The reversal of 123361666 is 666163321.

It is not an unprimeable number, because it can be changed into a prime (123361669) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 126561 + ... + 127531.

It is an arithmetic number, because the mean of its divisors is an integer number (11685870).

Almost surely, 2^123361666 is an apocalyptic number.

123361666 is a deficient number, since it is larger than the sum of its proper divisors (63612254).

123361666 is a wasteful number, since it uses less digits than its factorization.

123361666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1569.

The product of its digits is 23328, while the sum is 34.

The square root of 123361666 is about 11106.8297006842. The cubic root of 123361666 is about 497.8059409591.

The spelling of 123361666 in words is "one hundred twenty-three million, three hundred sixty-one thousand, six hundred sixty-six".