685752106 has 8 divisors (see below), whose sum is σ = 1107753444. Its totient is φ = 316500960.

The previous prime is 685752097. The next prime is 685752113. The reversal of 685752106 is 601257586.

It can be written as a sum of positive squares in 2 ways, for example, as 604914025 + 80838081 = 24595^2 + 8991^2 .

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

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 in 3 ways as a sum of consecutive naturals, for example, 13187515 + ... + 13187566.

Almost surely, 2^685752106 is an apocalyptic number.

685752106 is a deficient number, since it is larger than the sum of its proper divisors (422001338).

685752106 is a wasteful number, since it uses less digits than its factorization.

685752106 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26375096.

The product of its (nonzero) digits is 100800, while the sum is 40.

The square root of 685752106 is about 26186.8689613707. The cubic root of 685752106 is about 881.8384884988.

The spelling of 685752106 in words is "six hundred eighty-five million, seven hundred fifty-two thousand, one hundred six".