660523413 has 16 divisors (see below), whose sum is σ = 967680000. Its totient is φ = 397434480.

The previous prime is 660523411. The next prime is 660523427. The reversal of 660523413 is 314325066.

It is not a de Polignac number, because 660523413 - 2¹ = 660523411 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (660523411) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 67413 + ... + 76586.

It is an arithmetic number, because the mean of its divisors is an integer number (60480000).

Almost surely, 2^660523413 is an apocalyptic number.

It is an amenable number.

660523413 is a deficient number, since it is larger than the sum of its proper divisors (307156587).

660523413 is a wasteful number, since it uses less digits than its factorization.

660523413 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 144152.

The product of its (nonzero) digits is 12960, while the sum is 30.

The square root of 660523413 is about 25700.6500501446. The cubic root of 660523413 is about 870.8888669473. Note that the first 4 decimals are identical.

Adding to 660523413 its reverse (314325066), we get a palindrome (974848479).

The spelling of 660523413 in words is "six hundred sixty million, five hundred twenty-three thousand, four hundred thirteen".