686785230 has 40 divisors (see below), whose sum is σ = 1846691352. Its totient is φ = 183142512.

The previous prime is 686785223. The next prime is 686785237. The reversal of 686785230 is 32587686.

686785230 is a `hidden beast` number, since 68 + 67 + 8 + 523 + 0 = 666.

It is an interprime number because it is at equal distance from previous prime (686785223) and next prime (686785237).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (686785237) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 423132 + ... + 424751.

Almost surely, 2^686785230 is an apocalyptic number.

686785230 is an abundant number, since it is smaller than the sum of its proper divisors (1159906122).

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

686785230 is a wasteful number, since it uses less digits than its factorization.

686785230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 847902 (or 847893 counting only the distinct ones).

The product of its (nonzero) digits is 483840, while the sum is 45.

The square root of 686785230 is about 26206.5875306191. The cubic root of 686785230 is about 882.2811126706.

The spelling of 686785230 in words is "six hundred eighty-six million, seven hundred eighty-five thousand, two hundred thirty".