660010601 has 8 divisors (see below), whose sum is σ = 706041000. Its totient is φ = 614780928.

The previous prime is 660010597. The next prime is 660010609. The reversal of 660010601 is 106010066.

It can be written as a sum of positive squares in 4 ways, for example, as 106584976 + 553425625 = 10324^2 + 23525^2 .

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

It is not a de Polignac number, because 660010601 - 2² = 660010597 is a prime.

It is a super-2 number, since 2×660010601² = 871227986864762402, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (660010609) 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, 198476 + ... + 201773.

It is an arithmetic number, because the mean of its divisors is an integer number (88255125).

Almost surely, 2^660010601 is an apocalyptic number.

It is an amenable number.

660010601 is a deficient number, since it is larger than the sum of its proper divisors (46030399).

660010601 is a wasteful number, since it uses less digits than its factorization.

660010601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 400363.

The product of its (nonzero) digits is 216, while the sum is 20.

The square root of 660010601 is about 25690.6714781845. The cubic root of 660010601 is about 870.6634306346.

Adding to 660010601 its reverse (106010066), we get a palindrome (766020667).

The spelling of 660010601 in words is "six hundred sixty million, ten thousand, six hundred one".