685007024 has 50 divisors (see below), whose sum is σ = 1438756500. Its totient is φ = 315946176.

The previous prime is 685007009. The next prime is 685007039. The reversal of 685007024 is 420700586.

It is an interprime number because it is at equal distance from previous prime (685007009) and next prime (685007039).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 456227 + ... + 457725.

It is an arithmetic number, because the mean of its divisors is an integer number (28775130).

Almost surely, 2^685007024 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 685007024, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (719378250).

685007024 is an abundant number, since it is smaller than the sum of its proper divisors (753749476).

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

685007024 is an equidigital number, since it uses as much as digits as its factorization.

685007024 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1559 (or 1514 counting only the distinct ones).

The product of its (nonzero) digits is 13440, while the sum is 32.

The square root of 685007024 is about 26172.6388428832. The cubic root of 685007024 is about 881.5189949649.

The spelling of 685007024 in words is "six hundred eighty-five million, seven thousand, twenty-four".