685338401 has 8 divisors (see below), whose sum is σ = 747905664. Its totient is φ = 622815120.

The previous prime is 685338373. The next prime is 685338403. The reversal of 685338401 is 104833586.

685338401 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 685338401 - 2¹⁰ = 685337377 is a prime.

It is not an unprimeable number, because it can be changed into a prime (685338403) 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, 27455 + ... + 46091.

It is an arithmetic number, because the mean of its divisors is an integer number (93488208).

Almost surely, 2^685338401 is an apocalyptic number.

It is an amenable number.

685338401 is a deficient number, since it is larger than the sum of its proper divisors (62567263).

685338401 is a wasteful number, since it uses less digits than its factorization.

685338401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21991.

The product of its (nonzero) digits is 69120, while the sum is 38.

The square root of 685338401 is about 26178.9686771653. The cubic root of 685338401 is about 881.6611190688.

It can be divided in two parts, 6853 and 38401, that added together give a palindrome (45254).

The spelling of 685338401 in words is "six hundred eighty-five million, three hundred thirty-eight thousand, four hundred one".