660550052 has 24 divisors (see below), whose sum is σ = 1213685760. Its totient is φ = 314123040.

The previous prime is 660550043. The next prime is 660550073. The reversal of 660550052 is 250055066.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a junction number, because it is equal to n+sod(n) for n = 660549997 and 660550024.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34724 + ... + 50267.

It is an arithmetic number, because the mean of its divisors is an integer number (50570240).

Almost surely, 2^660550052 is an apocalyptic number.

It is an amenable number.

660550052 is a deficient number, since it is larger than the sum of its proper divisors (553135708).

660550052 is a wasteful number, since it uses less digits than its factorization.

660550052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85091 (or 85089 counting only the distinct ones).

The product of its (nonzero) digits is 9000, while the sum is 29.

The square root of 660550052 is about 25701.1683002933. The cubic root of 660550052 is about 870.9005744792.

The spelling of 660550052 in words is "six hundred sixty million, five hundred fifty thousand, fifty-two".