820606826602 has 4 divisors (see below), whose sum is σ = 1230910239906. Its totient is φ = 410303413300.

The previous prime is 820606826591. The next prime is 820606826629. The reversal of 820606826602 is 206628606028.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 819135413721 + 1471412881 = 905061^2 + 38359^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 205151706649 + ... + 205151706652.

Almost surely, 2^820606826602 is an apocalyptic number.

820606826602 is a deficient number, since it is larger than the sum of its proper divisors (410303413304).

820606826602 is a wasteful number, since it uses less digits than its factorization.

820606826602 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 410303413303.

The product of its (nonzero) digits is 663552, while the sum is 46.

The spelling of 820606826602 in words is "eight hundred twenty billion, six hundred six million, eight hundred twenty-six thousand, six hundred two".