685532160 has 528 divisors, whose sum is σ = 2682388800. Its totient is φ = 167215104.

The previous prime is 685532137. The next prime is 685532209. The reversal of 685532160 is 61235586.

685532160 is a `hidden beast` number, since 68 + 5 + 532 + 1 + 60 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 23639026 + ... + 23639054.

Almost surely, 2^685532160 is an apocalyptic number.

685532160 is a gapful number since it is divisible by the number (60) 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 685532160, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1341194400).

685532160 is an abundant number, since it is smaller than the sum of its proper divisors (1996856640).

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

685532160 is a wasteful number, since it uses less digits than its factorization.

685532160 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88 (or 58 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 36.

The square root of 685532160 is about 26182.6690770823. The cubic root of 685532160 is about 881.7441990383.

The spelling of 685532160 in words is "six hundred eighty-five million, five hundred thirty-two thousand, one hundred sixty".