685101144 has 192 divisors, whose sum is σ = 2199990240. Its totient is φ = 176117760.

The previous prime is 685101143. The next prime is 685101149. The reversal of 685101144 is 441101586.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (685101143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 626262 + ... + 627354.

Almost surely, 2^685101144 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 685101144, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1099995120).

685101144 is an abundant number, since it is smaller than the sum of its proper divisors (1514889096).

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

685101144 is a wasteful number, since it uses less digits than its factorization.

685101144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1170 (or 1159 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 30.

The square root of 685101144 is about 26174.4368420793. The cubic root of 685101144 is about 881.5593667009.

The spelling of 685101144 in words is "six hundred eighty-five million, one hundred one thousand, one hundred forty-four".