680565293 has 4 divisors (see below), whose sum is σ = 681147648. Its totient is φ = 679982940.

The previous prime is 680565287. The next prime is 680565299. The reversal of 680565293 is 392565086.

It is a happy number.

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, and also an emirpimes, since its reverse is a distinct semiprime: 392565086 = 2 ⋅196282543.

It is an interprime number because it is at equal distance from previous prime (680565287) and next prime (680565299).

It is a cyclic number.

It is not a de Polignac number, because 680565293 - 2¹⁸ = 680303149 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 (680565299) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 289421 + ... + 291762.

It is an arithmetic number, because the mean of its divisors is an integer number (170286912).

Almost surely, 2^680565293 is an apocalyptic number.

It is an amenable number.

680565293 is a deficient number, since it is larger than the sum of its proper divisors (582355).

680565293 is a wasteful number, since it uses less digits than its factorization.

680565293 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 582354.

The product of its (nonzero) digits is 388800, while the sum is 44.

The square root of 680565293 is about 26087.6463675817. The cubic root of 680565293 is about 879.6095431190.

The spelling of 680565293 in words is "six hundred eighty million, five hundred sixty-five thousand, two hundred ninety-three".