685145010002 has 8 divisors (see below), whose sum is σ = 1027737522300. Its totient is φ = 342565835904.

The previous prime is 685145009947. The next prime is 685145010037. The reversal of 685145010002 is 200010541586.

It can be written as a sum of positive squares in 2 ways, for example, as 610462505041 + 74682504961 = 781321^2 + 273281^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3205127 + ... + 3412202.

Almost surely, 2^685145010002 is an apocalyptic number.

685145010002 is a deficient number, since it is larger than the sum of its proper divisors (342592512298).

685145010002 is a wasteful number, since it uses less digits than its factorization.

685145010002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6669100.

The product of its (nonzero) digits is 9600, while the sum is 32.

Adding to 685145010002 its reverse (200010541586), we get a palindrome (885155551588).

The spelling of 685145010002 in words is "six hundred eighty-five billion, one hundred forty-five million, ten thousand, two".