680632225521 has 8 divisors (see below), whose sum is σ = 907527323040. Its totient is φ = 453745972512.

The previous prime is 680632225517. The next prime is 680632225531. The reversal of 680632225521 is 125522236086.

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

It is not a de Polignac number, because 680632225521 - 2² = 680632225517 is a prime.

It is not an unprimeable number, because it can be changed into a prime (680632225531) 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, 2029431 + ... + 2340908.

It is an arithmetic number, because the mean of its divisors is an integer number (113440915380).

Almost surely, 2^680632225521 is an apocalyptic number.

It is an amenable number.

680632225521 is a deficient number, since it is larger than the sum of its proper divisors (226895097519).

680632225521 is a wasteful number, since it uses less digits than its factorization.

680632225521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4422255.

The product of its (nonzero) digits is 345600, while the sum is 42.

The spelling of 680632225521 in words is "six hundred eighty billion, six hundred thirty-two million, two hundred twenty-five thousand, five hundred twenty-one".