806653 has 4 divisors (see below), whose sum is σ = 810688. Its totient is φ = 802620.

The previous prime is 806639. The next prime is 806657. The reversal of 806653 is 356608.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 806653 - 2¹³ = 798461 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (806657) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1701 + ... + 2122.

It is an arithmetic number, because the mean of its divisors is an integer number (202672).

2⁸⁰⁶⁶⁵³ is an apocalyptic number.

It is an amenable number.

806653 is a deficient number, since it is larger than the sum of its proper divisors (4035).

806653 is a wasteful number, since it uses less digits than its factorization.

806653 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4034.

The product of its (nonzero) digits is 4320, while the sum is 28.

The square root of 806653 is about 898.1386307247. The cubic root of 806653 is about 93.0884040101.

The spelling of 806653 in words is "eight hundred six thousand, six hundred fifty-three".