680285142436 has 9 divisors (see below), whose sum is σ = 1190501886049. Its totient is φ = 340141746424.

The previous prime is 680285142431. The next prime is 680285142437. The reversal of 680285142436 is 634241582086.

The square root of 680285142436 is 824794.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 119667564900 + 560617577536 = 345930^2 + 748744^2 .

It is a super-3 number, since 3×680285142436³ (a number of 36 digits) contains 333 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 680285142436.

It is not an unprimeable number, because it can be changed into a prime (680285142431) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 1443390 + ... + 1855786.

Almost surely, 2^680285142436 is an apocalyptic number.

680285142436 is the 824794-th square number.

It is an amenable number.

680285142436 is a deficient number, since it is larger than the sum of its proper divisors (510216743613).

680285142436 is an frugal number, since it uses more digits than its factorization.

680285142436 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 824798 (or 412399 counting only the distinct ones).

The product of its (nonzero) digits is 2211840, while the sum is 49.

Multiplying 680285142436 by its sum of digits (49), we get a square (33333971979364 = 5773558²).

The spelling of 680285142436 in words is "six hundred eighty billion, two hundred eighty-five million, one hundred forty-two thousand, four hundred thirty-six".