685332453 has 32 divisors (see below), whose sum is σ = 1007645184. Its totient is φ = 411720192.

The previous prime is 685332443. The next prime is 685332491. The reversal of 685332453 is 354233586.

It is not a de Polignac number, because 685332453 - 2⁵ = 685332421 is a prime.

It is a super-2 number, since 2×685332453² = 939361142269994418, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (685332433) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 480900 + ... + 482322.

It is an arithmetic number, because the mean of its divisors is an integer number (31488912).

Almost surely, 2^685332453 is an apocalyptic number.

It is an amenable number.

685332453 is a deficient number, since it is larger than the sum of its proper divisors (322312731).

685332453 is a wasteful number, since it uses less digits than its factorization.

685332453 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1725.

The product of its digits is 259200, while the sum is 39.

The square root of 685332453 is about 26178.8550742770. The cubic root of 685332453 is about 881.6585684381.

The spelling of 685332453 in words is "six hundred eighty-five million, three hundred thirty-two thousand, four hundred fifty-three".