665505146 has 8 divisors (see below), whose sum is σ = 1006118400. Its totient is φ = 330132348.

The previous prime is 665505143. The next prime is 665505151. The reversal of 665505146 is 641505566.

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

It is not an unprimeable number, because it can be changed into a prime (665505143) 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, 1309796 + ... + 1310303.

It is an arithmetic number, because the mean of its divisors is an integer number (125764800).

Almost surely, 2^665505146 is an apocalyptic number.

665505146 is a deficient number, since it is larger than the sum of its proper divisors (340613254).

665505146 is a wasteful number, since it uses less digits than its factorization.

665505146 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2620228.

The product of its (nonzero) digits is 108000, while the sum is 38.

The square root of 665505146 is about 25797.3864180075. The cubic root of 665505146 is about 873.0728289254.

The spelling of 665505146 in words is "six hundred sixty-five million, five hundred five thousand, one hundred forty-six".