660859952 has 20 divisors (see below), whose sum is σ = 1285047216. Its totient is φ = 329234880.

The previous prime is 660859951. The next prime is 660859963. The reversal of 660859952 is 259958066.

660859952 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 660859952.

It is not an unprimeable number, because it can be changed into a prime (660859951) 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, 70124 + ... + 78987.

Almost surely, 2^660859952 is an apocalyptic number.

It is an amenable number.

660859952 is a deficient number, since it is larger than the sum of its proper divisors (624187264).

660859952 is a wasteful number, since it uses less digits than its factorization.

660859952 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 149396 (or 149390 counting only the distinct ones).

The product of its (nonzero) digits is 1166400, while the sum is 50.

The square root of 660859952 is about 25707.1965021470. The cubic root of 660859952 is about 871.0367488141.

The spelling of 660859952 in words is "six hundred sixty million, eight hundred fifty-nine thousand, nine hundred fifty-two".