660571990366 has 8 divisors (see below), whose sum is σ = 990908181864. Its totient is φ = 330269263080.

The previous prime is 660571990363. The next prime is 660571990423. The reversal of 660571990366 is 663099175066.

660571990366 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a self number, because there is not a number n which added to its sum of digits gives 660571990366.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (660571990363) 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, 8316645 + ... + 8395696.

It is an arithmetic number, because the mean of its divisors is an integer number (123863522733).

Almost surely, 2^660571990366 is an apocalyptic number.

660571990366 is a deficient number, since it is larger than the sum of its proper divisors (330336191498).

660571990366 is a wasteful number, since it uses less digits than its factorization.

660571990366 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16732106.

The product of its (nonzero) digits is 11022480, while the sum is 58.

The spelling of 660571990366 in words is "six hundred sixty billion, five hundred seventy-one million, nine hundred ninety thousand, three hundred sixty-six".