685456901 has 8 divisors (see below), whose sum is σ = 739132800. Its totient is φ = 633540960.

The previous prime is 685456861. The next prime is 685456909. The reversal of 685456901 is 109654586.

685456901 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 685456901 - 2¹⁴ = 685440517 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (685456909) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 439181 + ... + 440738.

It is an arithmetic number, because the mean of its divisors is an integer number (92391600).

Almost surely, 2^685456901 is an apocalyptic number.

It is an amenable number.

685456901 is a deficient number, since it is larger than the sum of its proper divisors (53675899).

685456901 is a wasteful number, since it uses less digits than its factorization.

685456901 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 879979.

The product of its (nonzero) digits is 259200, while the sum is 44.

The square root of 685456901 is about 26181.2318464965. The cubic root of 685456901 is about 881.7119313495.

The spelling of 685456901 in words is "six hundred eighty-five million, four hundred fifty-six thousand, nine hundred one".