660312601 has 16 divisors (see below), whose sum is σ = 740013120. Its totient is φ = 585224640.

The previous prime is 660312533. The next prime is 660312607. The reversal of 660312601 is 106213066.

660312601 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 660312601 - 2¹⁹ = 659788313 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (660312607) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22971 + ... + 42991.

It is an arithmetic number, because the mean of its divisors is an integer number (46250820).

Almost surely, 2^660312601 is an apocalyptic number.

It is an amenable number.

660312601 is a deficient number, since it is larger than the sum of its proper divisors (79700519).

660312601 is a wasteful number, since it uses less digits than its factorization.

660312601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20136.

The product of its (nonzero) digits is 1296, while the sum is 25.

The square root of 660312601 is about 25696.5484258100. The cubic root of 660312601 is about 870.7962064120.

Adding to 660312601 its reverse (106213066), we get a palindrome (766525667).

The spelling of 660312601 in words is "six hundred sixty million, three hundred twelve thousand, six hundred one".