660813146 has 16 divisors (see below), whose sum is σ = 1140328320. Its totient is φ = 281329200.

The previous prime is 660813133. The next prime is 660813149. The reversal of 660813146 is 641318066.

It is not an unprimeable number, because it can be changed into a prime (660813149) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 154181 + ... + 158408.

It is an arithmetic number, because the mean of its divisors is an integer number (71270520).

Almost surely, 2^660813146 is an apocalyptic number.

660813146 is a deficient number, since it is larger than the sum of its proper divisors (479515174).

660813146 is a wasteful number, since it uses less digits than its factorization.

660813146 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 312749.

The product of its (nonzero) digits is 20736, while the sum is 35.

The square root of 660813146 is about 25706.2861183797. The cubic root of 660813146 is about 871.0161843417.

The spelling of 660813146 in words is "six hundred sixty million, eight hundred thirteen thousand, one hundred forty-six".