123668065 has 8 divisors (see below), whose sum is σ = 148463208. Its totient is φ = 98893440.

The previous prime is 123668029. The next prime is 123668087. The reversal of 123668065 is 560866321.

It can be written as a sum of positive squares in 4 ways, for example, as 35533521 + 88134544 = 5961^2 + 9388^2 .

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

It is not a de Polignac number, because 123668065 - 2⁹ = 123667553 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16219 + ... + 22591.

It is an arithmetic number, because the mean of its divisors is an integer number (18557901).

Almost surely, 2^123668065 is an apocalyptic number.

It is an amenable number.

123668065 is a deficient number, since it is larger than the sum of its proper divisors (24795143).

123668065 is an equidigital number, since it uses as much as digits as its factorization.

123668065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10259.

The product of its (nonzero) digits is 51840, while the sum is 37.

The square root of 123668065 is about 11120.6144164790. The cubic root of 123668065 is about 498.2177413230.

The spelling of 123668065 in words is "one hundred twenty-three million, six hundred sixty-eight thousand, sixty-five".