685156803 has 4 divisors (see below), whose sum is σ = 913542408. Its totient is φ = 456771200.

The previous prime is 685156751. The next prime is 685156841. The reversal of 685156803 is 308651586.

685156803 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 685156803 - 2¹² = 685152707 is a prime.

It is not an unprimeable number, because it can be changed into a prime (685152803) 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, 114192798 + ... + 114192803.

It is an arithmetic number, because the mean of its divisors is an integer number (228385602).

Almost surely, 2^685156803 is an apocalyptic number.

685156803 is a deficient number, since it is larger than the sum of its proper divisors (228385605).

685156803 is a wasteful number, since it uses less digits than its factorization.

685156803 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 228385604.

The product of its (nonzero) digits is 172800, while the sum is 42.

The square root of 685156803 is about 26175.5000525300. The cubic root of 685156803 is about 881.5832392753.

The spelling of 685156803 in words is "six hundred eighty-five million, one hundred fifty-six thousand, eight hundred three".