686484834 has 32 divisors (see below), whose sum is σ = 1583514240. Its totient is φ = 194337792.

The previous prime is 686484817. The next prime is 686484847. The reversal of 686484834 is 438484686.

It is a super-2 number, since 2×686484834² = 942522854624015112, which contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 70399 + ... + 79554.

It is an arithmetic number, because the mean of its divisors is an integer number (49484820).

Almost surely, 2^686484834 is an apocalyptic number.

686484834 is an abundant number, since it is smaller than the sum of its proper divisors (897029406).

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

686484834 is a wasteful number, since it uses less digits than its factorization.

686484834 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 150074.

The product of its digits is 3538944, while the sum is 51.

The square root of 686484834 is about 26200.8555967167. The cubic root of 686484834 is about 882.1524589778.

The spelling of 686484834 in words is "six hundred eighty-six million, four hundred eighty-four thousand, eight hundred thirty-four".