660104413 has 4 divisors (see below), whose sum is σ = 660365728. Its totient is φ = 659843100.

The previous prime is 660104399. The next prime is 660104437. The reversal of 660104413 is 314401066.

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 660104413 - 2⁹ = 660103901 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 (660104113) 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, 126831 + ... + 131932.

It is an arithmetic number, because the mean of its divisors is an integer number (165091432).

Almost surely, 2^660104413 is an apocalyptic number.

It is an amenable number.

660104413 is a deficient number, since it is larger than the sum of its proper divisors (261315).

660104413 is a wasteful number, since it uses less digits than its factorization.

660104413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 261314.

The product of its (nonzero) digits is 1728, while the sum is 25.

The square root of 660104413 is about 25692.4972122213. The cubic root of 660104413 is about 870.7046798752.

Adding to 660104413 its reverse (314401066), we get a palindrome (974505479).

The spelling of 660104413 in words is "six hundred sixty million, one hundred four thousand, four hundred thirteen".