123661662 has 32 divisors (see below), whose sum is σ = 259469568. Its totient is φ = 39215616.

The previous prime is 123661651. The next prime is 123661691. The reversal of 123661662 is 266166321.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

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 in 15 ways as a sum of consecutive naturals, for example, 24313 + ... + 28955.

It is an arithmetic number, because the mean of its divisors is an integer number (8108424).

Almost surely, 2^123661662 is an apocalyptic number.

123661662 is an abundant number, since it is smaller than the sum of its proper divisors (135807906).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

123661662 is a wasteful number, since it uses less digits than its factorization.

123661662 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4864.

The product of its digits is 15552, while the sum is 33.

The square root of 123661662 is about 11120.3265239830. The cubic root of 123661662 is about 498.2091426514.

It can be divided in two parts, 12366 and 1662, that added together give a triangular number (14028 = T₁₆₇).

The spelling of 123661662 in words is "one hundred twenty-three million, six hundred sixty-one thousand, six hundred sixty-two".