123885665 has 8 divisors (see below), whose sum is σ = 148911360. Its totient is φ = 98942832.

The previous prime is 123885661. The next prime is 123885673. The reversal of 123885665 is 566588321.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 123885665 - 2² = 123885661 is a prime.

It is not an unprimeable number, because it can be changed into a prime (123885661) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17375 + ... + 23444.

It is an arithmetic number, because the mean of its divisors is an integer number (18613920).

Almost surely, 2^123885665 is an apocalyptic number.

It is an amenable number.

123885665 is a deficient number, since it is larger than the sum of its proper divisors (25025695).

123885665 is an equidigital number, since it uses as much as digits as its factorization.

123885665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41431.

The product of its digits is 345600, while the sum is 44.

The square root of 123885665 is about 11130.3937486506. The cubic root of 123885665 is about 498.5097829186.

The spelling of 123885665 in words is "one hundred twenty-three million, eight hundred eighty-five thousand, six hundred sixty-five".