680002020202 has 8 divisors (see below), whose sum is σ = 1020015051300. Its totient is φ = 339997003104.

The previous prime is 680002020197. The next prime is 680002020239. The reversal of 680002020202 is 202020200086.

It can be written as a sum of positive squares in 2 ways, for example, as 676771120921 + 3230899281 = 822661^2 + 56841^2 .

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

It is a super-2 number, since 2×680002020202² (a number of 24 digits) contains 22 as substring.

680002020202 is a modest number, since divided by 2020202 gives 6800 as remainder.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1786677 + ... + 2133592.

Almost surely, 2^680002020202 is an apocalyptic number.

680002020202 is a deficient number, since it is larger than the sum of its proper divisors (340013031098).

680002020202 is a wasteful number, since it uses less digits than its factorization.

680002020202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4007000.

The product of its (nonzero) digits is 768, while the sum is 22.

Adding to 680002020202 its reverse (202020200086), we get a palindrome (882022220288).

The spelling of 680002020202 in words is "six hundred eighty billion, two million, twenty thousand, two hundred two".