786534 has 32 divisors (see below), whose sum is σ = 1833216. Its totient is φ = 220320.

The previous prime is 786491. The next prime is 786547. The reversal of 786534 is 435687.

It is a junction number, because it is equal to n+sod(n) for n = 786495 and 786504.

It is a congruent number.

It is an unprimeable number.

786534 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2409 + ... + 2715.

It is an arithmetic number, because the mean of its divisors is an integer number (57288).

2⁷⁸⁶⁵³⁴ is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 786534, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (916608).

786534 is an abundant number, since it is smaller than the sum of its proper divisors (1046682).

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

786534 is a wasteful number, since it uses less digits than its factorization.

786534 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 380.

The product of its digits is 20160, while the sum is 33.

The square root of 786534 is about 886.8675211101. The cubic root of 786534 is about 92.3079629266.

Adding to 786534 its reverse (435687), we get a palindrome (1222221).

The spelling of 786534 in words is "seven hundred eighty-six thousand, five hundred thirty-four".