685606032 has 120 divisors (see below), whose sum is σ = 2094761760. Its totient is φ = 216483840.

The previous prime is 685606027. The next prime is 685606037. The reversal of 685606032 is 230606586.

685606032 is a `hidden beast` number, since 6 + 8 + 560 + 60 + 32 = 666.

It is an interprime number because it is at equal distance from previous prime (685606027) and next prime (685606037).

It is a super-2 number, since 2×685606032² = 940111262229570048, which contains 22 as substring.

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

It is not an unprimeable number, because it can be changed into a prime (685606037) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 69232 + ... + 78512.

It is an arithmetic number, because the mean of its divisors is an integer number (17456348).

Almost surely, 2^685606032 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 685606032, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1047380880).

685606032 is an abundant number, since it is smaller than the sum of its proper divisors (1409155728).

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

685606032 is a wasteful number, since it uses less digits than its factorization.

685606032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9323 (or 9305 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 36.

The square root of 685606032 is about 26184.0797432333. The cubic root of 685606032 is about 881.7758697470.

The spelling of 685606032 in words is "six hundred eighty-five million, six hundred six thousand, thirty-two".