660340146 has 24 divisors (see below), whose sum is σ = 1402940880. Its totient is φ = 207164992.

The previous prime is 660340123. The next prime is 660340157. The reversal of 660340146 is 641043066.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 188676 + ... + 192143.

It is an arithmetic number, because the mean of its divisors is an integer number (58455870).

Almost surely, 2^660340146 is an apocalyptic number.

660340146 is an abundant number, since it is smaller than the sum of its proper divisors (742600734).

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

660340146 is a wasteful number, since it uses less digits than its factorization.

660340146 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 380858 (or 380841 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 30.

The square root of 660340146 is about 25697.0843871440. The cubic root of 660340146 is about 870.8083146912.

The spelling of 660340146 in words is "six hundred sixty million, three hundred forty thousand, one hundred forty-six".