685533504 has 112 divisors (see below), whose sum is σ = 1887321600. Its totient is φ = 219371520.

The previous prime is 685533503. The next prime is 685533557. The reversal of 685533504 is 405335586.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (685533503) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 886462 + ... + 887234.

Almost surely, 2^685533504 is an apocalyptic number.

685533504 is a gapful number since it is divisible by the number (64) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 685533504, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (943660800).

685533504 is an abundant number, since it is smaller than the sum of its proper divisors (1201788096).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

685533504 is a wasteful number, since it uses less digits than its factorization.

685533504 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 968 (or 958 counting only the distinct ones).

The product of its (nonzero) digits is 216000, while the sum is 39.

The square root of 685533504 is about 26182.6947429022. The cubic root of 685533504 is about 881.7447752639.

The spelling of 685533504 in words is "six hundred eighty-five million, five hundred thirty-three thousand, five hundred four".