660351876 has 96 divisors (see below), whose sum is σ = 1696101120. Its totient is φ = 199102464.

The previous prime is 660351871. The next prime is 660351877. The reversal of 660351876 is 678153066.

It is not an unprimeable number, because it can be changed into a prime (660351871) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 671281 + ... + 672263.

It is an arithmetic number, because the mean of its divisors is an integer number (17667720).

Almost surely, 2^660351876 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 660351876, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (848050560).

660351876 is an abundant number, since it is smaller than the sum of its proper divisors (1035749244).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

660351876 is a wasteful number, since it uses less digits than its factorization.

660351876 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1133 (or 1131 counting only the distinct ones).

The product of its (nonzero) digits is 181440, while the sum is 42.

The square root of 660351876 is about 25697.3126221401. The cubic root of 660351876 is about 870.8134708828.

The spelling of 660351876 in words is "six hundred sixty million, three hundred fifty-one thousand, eight hundred seventy-six".