806634 has 24 divisors (see below), whose sum is σ = 1791972. Its totient is φ = 262080.

The previous prime is 806609. The next prime is 806639. The reversal of 806634 is 436608.

It can be written as a sum of positive squares in 2 ways, for example, as 804609 + 2025 = 897^2 + 45^2 .

It is a zygodrome in base 3.

It is a junction number, because it is equal to n+sod(n) for n = 806598 and 806607.

It is not an unprimeable number, because it can be changed into a prime (806639) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 192 + ... + 1284.

2⁸⁰⁶⁶³⁴ is an apocalyptic number.

806634 is an abundant number, since it is smaller than the sum of its proper divisors (985338).

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

806634 is a wasteful number, since it uses less digits than its factorization.

806634 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1142 (or 1139 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

The square root of 806634 is about 898.1280532307. The cubic root of 806634 is about 93.0876731326.

It can be divided in two parts, 8066 and 34, that added together give a square (8100 = 90²).

The spelling of 806634 in words is "eight hundred six thousand, six hundred thirty-four".