686532434 has 48 divisors (see below), whose sum is σ = 1266138720. Its totient is φ = 277603200.

The previous prime is 686532433. The next prime is 686532443. The reversal of 686532434 is 434235686.

Its product of digits (414720) is a multiple of the sum of its prime divisors (1536).

It is a junction number, because it is equal to n+sod(n) for n = 686532391 and 686532400.

It is not an unprimeable number, because it can be changed into a prime (686532433) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 571034 + ... + 572234.

It is an arithmetic number, because the mean of its divisors is an integer number (26377890).

Almost surely, 2^686532434 is an apocalyptic number.

686532434 is a deficient number, since it is larger than the sum of its proper divisors (579606286).

686532434 is a wasteful number, since it uses less digits than its factorization.

686532434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1543 (or 1536 counting only the distinct ones).

The product of its digits is 414720, while the sum is 41.

The square root of 686532434 is about 26201.7639482536. The cubic root of 686532434 is about 882.1728476227.

The spelling of 686532434 in words is "six hundred eighty-six million, five hundred thirty-two thousand, four hundred thirty-four".