820711602 has 48 divisors (see below), whose sum is σ = 1849909152. Its totient is φ = 272704320.

The previous prime is 820711597. The next prime is 820711613. The reversal of 820711602 is 206117028.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 161277 + ... + 166287.

It is an arithmetic number, because the mean of its divisors is an integer number (38539774).

Almost surely, 2^820711602 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 820711602, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (924954576).

820711602 is an abundant number, since it is smaller than the sum of its proper divisors (1029197550).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

820711602 is a wasteful number, since it uses less digits than its factorization.

820711602 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5365 (or 5353 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 27.

The square root of 820711602 is about 28648.0645419547. The cubic root of 820711602 is about 936.2608370686.

The spelling of 820711602 in words is "eight hundred twenty million, seven hundred eleven thousand, six hundred two".