685611360 has 288 divisors, whose sum is σ = 2831879232. Its totient is φ = 147456000.

The previous prime is 685611313. The next prime is 685611383. The reversal of 685611360 is 63116586.

It is a happy number.

685611360 is a `hidden beast` number, since 6 + 8 + 5 + 611 + 36 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (288).

It is a super-2 number, since 2×685611360² = 940125873922099200, which contains 22 as substring.

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

It is a congruent number.

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, 169360 + ... + 173360.

It is an arithmetic number, because the mean of its divisors is an integer number (9832914).

Almost surely, 2^685611360 is an apocalyptic number.

685611360 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 685611360, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1415939616).

685611360 is an abundant number, since it is smaller than the sum of its proper divisors (2146267872).

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

685611360 is a wasteful number, since it uses less digits than its factorization.

685611360 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4046 (or 4035 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 36.

The square root of 685611360 is about 26184.1814842473. The cubic root of 685611360 is about 881.7781539012.

The spelling of 685611360 in words is "six hundred eighty-five million, six hundred eleven thousand, three hundred sixty".