680468509 has 8 divisors (see below), whose sum is σ = 777952448. Its totient is φ = 583053120.

The previous prime is 680468497. The next prime is 680468521. The reversal of 680468509 is 905864086.

It is an interprime number because it is at equal distance from previous prime (680468497) and next prime (680468521).

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 680468509 - 2¹³ = 680460317 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (680468539) 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, 6274 + ... + 37420.

It is an arithmetic number, because the mean of its divisors is an integer number (97244056).

Almost surely, 2^680468509 is an apocalyptic number.

It is an amenable number.

680468509 is a deficient number, since it is larger than the sum of its proper divisors (97483939).

680468509 is a wasteful number, since it uses less digits than its factorization.

680468509 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34275.

The product of its (nonzero) digits is 414720, while the sum is 46.

The square root of 680468509 is about 26085.7913240139. The cubic root of 680468509 is about 879.5678443691.

The spelling of 680468509 in words is "six hundred eighty million, four hundred sixty-eight thousand, five hundred nine".