660844898 has 32 divisors (see below), whose sum is σ = 1171277184. Its totient is φ = 273756672.

The previous prime is 660844861. The next prime is 660844907. The reversal of 660844898 is 898448066.

660844898 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 52736 + ... + 64052.

It is an arithmetic number, because the mean of its divisors is an integer number (36602412).

Almost surely, 2^660844898 is an apocalyptic number.

660844898 is a deficient number, since it is larger than the sum of its proper divisors (510432286).

660844898 is a wasteful number, since it uses less digits than its factorization.

660844898 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11466.

The product of its (nonzero) digits is 2654208, while the sum is 53.

The square root of 660844898 is about 25706.9037030911. The cubic root of 660844898 is about 871.0301348627.

The spelling of 660844898 in words is "six hundred sixty million, eight hundred forty-four thousand, eight hundred ninety-eight".