123661602 has 12 divisors (see below), whose sum is σ = 267933510. Its totient is φ = 41220528.

The previous prime is 123661591. The next prime is 123661607. The reversal of 123661602 is 206166321.

123661602 is a `hidden beast` number, since 12 + 36 + 616 + 0 + 2 = 666.

It can be written as a sum of positive squares in only one way, i.e., 119705481 + 3956121 = 10941^2 + 1989^2 .

It is not an unprimeable number, because it can be changed into a prime (123661607) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3435027 + ... + 3435062.

Almost surely, 2^123661602 is an apocalyptic number.

123661602 is an abundant number, since it is smaller than the sum of its proper divisors (144271908).

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

123661602 is a wasteful number, since it uses less digits than its factorization.

123661602 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6870097 (or 6870094 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 27.

The square root of 123661602 is about 11120.3238262202. The cubic root of 123661602 is about 498.2090620752.

The spelling of 123661602 in words is "one hundred twenty-three million, six hundred sixty-one thousand, six hundred two".