685242001 has 8 divisors (see below), whose sum is σ = 725981184. Its totient is φ = 644550720.

The previous prime is 685241993. The next prime is 685242007. The reversal of 685242001 is 100242586.

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

It is a cyclic number.

It is not a de Polignac number, because 685242001 - 2³ = 685241993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (685242007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19936 + ... + 42046.

It is an arithmetic number, because the mean of its divisors is an integer number (90747648).

Almost surely, 2^685242001 is an apocalyptic number.

It is an amenable number.

685242001 is a deficient number, since it is larger than the sum of its proper divisors (40739183).

685242001 is a wasteful number, since it uses less digits than its factorization.

685242001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23951.

The product of its (nonzero) digits is 3840, while the sum is 28.

The square root of 685242001 is about 26177.1274398090. The cubic root of 685242001 is about 881.6197788506.

Adding to 685242001 its reverse (100242586), we get a palindrome (785484587).

The spelling of 685242001 in words is "six hundred eighty-five million, two hundred forty-two thousand, one".