660846974 has 4 divisors (see below), whose sum is σ = 991270464. Its totient is φ = 330423486.

The previous prime is 660846959. The next prime is 660846997. The reversal of 660846974 is 479648066.

It is a semiprime because it is the product of two primes.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 165211742 + ... + 165211745.

It is an arithmetic number, because the mean of its divisors is an integer number (247817616).

Almost surely, 2^660846974 is an apocalyptic number.

660846974 is a deficient number, since it is larger than the sum of its proper divisors (330423490).

660846974 is a wasteful number, since it uses less digits than its factorization.

660846974 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 330423489.

The product of its (nonzero) digits is 1741824, while the sum is 50.

The square root of 660846974 is about 25706.9440813178. The cubic root of 660846974 is about 871.0310469560.

The spelling of 660846974 in words is "six hundred sixty million, eight hundred forty-six thousand, nine hundred seventy-four".