3686620802 has 4 divisors (see below), whose sum is σ = 5529931206. Its totient is φ = 1843310400.

The previous prime is 3686620801. The next prime is 3686620879. The reversal of 3686620802 is 2080266863.

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., 3621512041 + 65108761 = 60179^2 + 8069^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 3686620802.

It is not an unprimeable number, because it can be changed into a prime (3686620801) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 921655199 + ... + 921655202.

Almost surely, 2^3686620802 is an apocalyptic number.

3686620802 is a deficient number, since it is larger than the sum of its proper divisors (1843310404).

3686620802 is a wasteful number, since it uses less digits than its factorization.

3686620802 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1843310403.

The product of its (nonzero) digits is 165888, while the sum is 41.

The square root of 3686620802 is about 60717.5493741307. The cubic root of 3686620802 is about 1544.8138570546.

The spelling of 3686620802 in words is "three billion, six hundred eighty-six million, six hundred twenty thousand, eight hundred two".