680612135 has 8 divisors (see below), whose sum is σ = 933410976. Its totient is φ = 466705440.

The previous prime is 680612131. The next prime is 680612137. The reversal of 680612135 is 531216086.

It is a happy number.

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

It is not a de Polignac number, because 680612135 - 2² = 680612131 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 (680612131) 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, 9722996 + ... + 9723065.

It is an arithmetic number, because the mean of its divisors is an integer number (116676372).

Almost surely, 2^680612135 is an apocalyptic number.

680612135 is a deficient number, since it is larger than the sum of its proper divisors (252798841).

680612135 is a wasteful number, since it uses less digits than its factorization.

680612135 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19446073.

The product of its (nonzero) digits is 8640, while the sum is 32.

The square root of 680612135 is about 26088.5441333931. The cubic root of 680612135 is about 879.6297232670.

The spelling of 680612135 in words is "six hundred eighty million, six hundred twelve thousand, one hundred thirty-five".