685150830 has 576 divisors, whose sum is σ = 2554493760. Its totient is φ = 125411328.

The previous prime is 685150799. The next prime is 685150861. The reversal of 685150830 is 38051586.

685150830 is a `hidden beast` number, since 68 + 515 + 0 + 83 + 0 = 666.

685150830 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (685150799) and next prime (685150861).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 287 ways as a sum of consecutive naturals, for example, 18517572 + ... + 18517608.

It is an arithmetic number, because the mean of its divisors is an integer number (4434885).

Almost surely, 2^685150830 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 685150830, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1277246880).

685150830 is an abundant number, since it is smaller than the sum of its proper divisors (1869342930).

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

685150830 is a wasteful number, since it uses less digits than its factorization.

685150830 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113 (or 103 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 36.

The square root of 685150830 is about 26175.3859570399. The cubic root of 685150830 is about 881.5806774714.

The spelling of 685150830 in words is "six hundred eighty-five million, one hundred fifty thousand, eight hundred thirty".