662813 has 8 divisors (see below), whose sum is σ = 709632. Its totient is φ = 616896.

The previous prime is 662797. The next prime is 662819. The reversal of 662813 is 318266.

662813 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 662813 - 2⁴ = 662797 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a plaindrome in base 14.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (662819) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2006 + ... + 2312.

It is an arithmetic number, because the mean of its divisors is an integer number (88704).

2⁶⁶²⁸¹³ is an apocalyptic number.

It is an amenable number.

662813 is a deficient number, since it is larger than the sum of its proper divisors (46819).

662813 is a wasteful number, since it uses less digits than its factorization.

662813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 451.

The product of its digits is 1728, while the sum is 26.

The square root of 662813 is about 814.1332814718. The cubic root of 662813 is about 87.1893966991.

The spelling of 662813 in words is "six hundred sixty-two thousand, eight hundred thirteen".