685428063 has 8 divisors (see below), whose sum is σ = 914915328. Its totient is φ = 456446424.

The previous prime is 685428031. The next prime is 685428067. The reversal of 685428063 is 360824586.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 685428063 - 2⁵ = 685428031 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (685428067) 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, 123231 + ... + 128672.

It is an arithmetic number, because the mean of its divisors is an integer number (114364416).

Almost surely, 2^685428063 is an apocalyptic number.

685428063 is a deficient number, since it is larger than the sum of its proper divisors (229487265).

685428063 is a wasteful number, since it uses less digits than its factorization.

685428063 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 252813.

The product of its (nonzero) digits is 276480, while the sum is 42.

The square root of 685428063 is about 26180.6811026757. The cubic root of 685428063 is about 881.6995662807.

The spelling of 685428063 in words is "six hundred eighty-five million, four hundred twenty-eight thousand, sixty-three".