680513515 has 8 divisors (see below), whose sum is σ = 890854128. Its totient is φ = 494918880.

The previous prime is 680513513. The next prime is 680513521. The reversal of 680513515 is 515315086.

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

It is not a de Polignac number, because 680513515 - 2¹ = 680513513 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (680513513) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6186432 + ... + 6186541.

It is an arithmetic number, because the mean of its divisors is an integer number (111356766).

Almost surely, 2^680513515 is an apocalyptic number.

680513515 is a deficient number, since it is larger than the sum of its proper divisors (210340613).

680513515 is a wasteful number, since it uses less digits than its factorization.

680513515 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12372989.

The product of its (nonzero) digits is 18000, while the sum is 34.

The square root of 680513515 is about 26086.6539632817. The cubic root of 680513515 is about 879.5872354000.

The spelling of 680513515 in words is "six hundred eighty million, five hundred thirteen thousand, five hundred fifteen".