685503455 has 32 divisors (see below), whose sum is σ = 1020493824. Its totient is φ = 430448256.

The previous prime is 685503449. The next prime is 685503487. The reversal of 685503455 is 554305586.

It is not a de Polignac number, because 685503455 - 2¹² = 685499359 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 51854 + ... + 63716.

It is an arithmetic number, because the mean of its divisors is an integer number (31890432).

Almost surely, 2^685503455 is an apocalyptic number.

685503455 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

685503455 is a deficient number, since it is larger than the sum of its proper divisors (334990369).

685503455 is a wasteful number, since it uses less digits than its factorization.

685503455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12015.

The product of its (nonzero) digits is 360000, while the sum is 41.

The square root of 685503455 is about 26182.1209033951. The cubic root of 685503455 is about 881.7318918984.

The spelling of 685503455 in words is "six hundred eighty-five million, five hundred three thousand, four hundred fifty-five".