660852347 has 4 divisors (see below), whose sum is σ = 661131360. Its totient is φ = 660573336.

The previous prime is 660852343. The next prime is 660852349. The reversal of 660852347 is 743258066.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 660852347 - 2² = 660852343 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (660852343) by changing a digit.

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 in 3 ways as a sum of consecutive naturals, for example, 135923 + ... + 140700.

It is an arithmetic number, because the mean of its divisors is an integer number (165282840).

Almost surely, 2^660852347 is an apocalyptic number.

660852347 is a deficient number, since it is larger than the sum of its proper divisors (279013).

660852347 is a wasteful number, since it uses less digits than its factorization.

660852347 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 279012.

The product of its (nonzero) digits is 241920, while the sum is 41.

The square root of 660852347 is about 25707.0485859423. The cubic root of 660852347 is about 871.0334075818.

The spelling of 660852347 in words is "six hundred sixty million, eight hundred fifty-two thousand, three hundred forty-seven".