664733 has 8 divisors (see below), whose sum is σ = 704256. Its totient is φ = 626400.

The previous prime is 664711. The next prime is 664739. The reversal of 664733 is 337466.

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

It is a cyclic number.

It is not a de Polignac number, because 664733 - 2⁶ = 664669 is a prime.

It is a super-2 number, since 2×664733² = 883739922578, which contains 22 as substring.

It is a d-powerful number, because it can be written as 6⁴ + 6⁶ + 7³ + 4⁹ + 3¹¹ + 3¹¹ .

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 664696 and 664705.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (664739) 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, 1010 + ... + 1532.

It is an arithmetic number, because the mean of its divisors is an integer number (88032).

2⁶⁶⁴⁷³³ is an apocalyptic number.

It is an amenable number.

664733 is a deficient number, since it is larger than the sum of its proper divisors (39523).

664733 is a wasteful number, since it uses less digits than its factorization.

664733 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 595.

The product of its digits is 9072, while the sum is 29.

The square root of 664733 is about 815.3115968757. The cubic root of 664733 is about 87.2735040111.

The spelling of 664733 in words is "six hundred sixty-four thousand, seven hundred thirty-three".