680534389 has 8 divisors (see below), whose sum is σ = 686331360. Its totient is φ = 674746800.

The previous prime is 680534357. The next prime is 680534411. The reversal of 680534389 is 983435086.

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 680534389 - 2⁵ = 680534357 is a prime.

It is a super-2 number, since 2×680534389² = 926254109223206642, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (680514389) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 289782 + ... + 292120.

It is an arithmetic number, because the mean of its divisors is an integer number (85791420).

Almost surely, 2^680534389 is an apocalyptic number.

It is an amenable number.

680534389 is a deficient number, since it is larger than the sum of its proper divisors (5796971).

680534389 is a wasteful number, since it uses less digits than its factorization.

680534389 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4691.

The product of its (nonzero) digits is 622080, while the sum is 46.

The square root of 680534389 is about 26087.0540498539. The cubic root of 680534389 is about 879.5962287635.

The spelling of 680534389 in words is "six hundred eighty million, five hundred thirty-four thousand, three hundred eighty-nine".