320676653 has 8 divisors (see below), whose sum is σ = 350058720. Its totient is φ = 291332880.

The previous prime is 320676647. The next prime is 320676667. The reversal of 320676653 is 356676023.

Added to its reverse (356676023) it gives a square (677352676 = 26026²).

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 320676653 - 2⁴ = 320676637 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320676613) 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, 9626 + ... + 27092.

It is an arithmetic number, because the mean of its divisors is an integer number (43757340).

Almost surely, 2^320676653 is an apocalyptic number.

It is an amenable number.

320676653 is a deficient number, since it is larger than the sum of its proper divisors (29382067).

320676653 is a wasteful number, since it uses less digits than its factorization.

320676653 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19147.

The product of its (nonzero) digits is 136080, while the sum is 38.

The square root of 320676653 is about 17907.4468587792. The cubic root of 320676653 is about 684.4721477376.

Adding to 320676653 its reverse (356676023), we get a square (677352676 = 26026²).

The spelling of 320676653 in words is "three hundred twenty million, six hundred seventy-six thousand, six hundred fifty-three".