660531926 has 8 divisors (see below), whose sum is σ = 992022024. Its totient is φ = 329857920.

The previous prime is 660531887. The next prime is 660531929. The reversal of 660531926 is 629135066.

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

It is a self number, because there is not a number n which added to its sum of digits gives 660531926.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (660531929) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 201995 + ... + 205238.

It is an arithmetic number, because the mean of its divisors is an integer number (124002753).

Almost surely, 2^660531926 is an apocalyptic number.

660531926 is a deficient number, since it is larger than the sum of its proper divisors (331490098).

660531926 is a wasteful number, since it uses less digits than its factorization.

660531926 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 408046.

The product of its (nonzero) digits is 58320, while the sum is 38.

The square root of 660531926 is about 25700.8156679900. The cubic root of 660531926 is about 870.8926083464.

The spelling of 660531926 in words is "six hundred sixty million, five hundred thirty-one thousand, nine hundred twenty-six".