660104501 has 4 divisors (see below), whose sum is σ = 754405152. Its totient is φ = 565803852.

The previous prime is 660104477. The next prime is 660104527. The reversal of 660104501 is 105401066.

660104501 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 660104501 - 2⁶ = 660104437 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (660104581) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 47150315 + ... + 47150328.

It is an arithmetic number, because the mean of its divisors is an integer number (188601288).

Almost surely, 2^660104501 is an apocalyptic number.

It is an amenable number.

660104501 is a deficient number, since it is larger than the sum of its proper divisors (94300651).

660104501 is an equidigital number, since it uses as much as digits as its factorization.

660104501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94300650.

The product of its (nonzero) digits is 720, while the sum is 23.

The square root of 660104501 is about 25692.4989247835. The cubic root of 660104501 is about 870.7047185671.

Adding to 660104501 its reverse (105401066), we get a palindrome (765505567).

The spelling of 660104501 in words is "six hundred sixty million, one hundred four thousand, five hundred one".