3706885820 has 72 divisors (see below), whose sum is σ = 8697089184. Its totient is φ = 1325808000.

The previous prime is 3706885813. The next prime is 3706885823. The reversal of 3706885820 is 285886073.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3706885823) 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 in 23 ways as a sum of consecutive naturals, for example, 135065 + ... + 160175.

Almost surely, 2^3706885820 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3706885820, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4348544592).

3706885820 is an abundant number, since it is smaller than the sum of its proper divisors (4990203364).

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

3706885820 is a wasteful number, since it uses less digits than its factorization.

3706885820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25203 (or 25190 counting only the distinct ones).

The product of its (nonzero) digits is 645120, while the sum is 47.

The square root of 3706885820 is about 60884.2000850795. The cubic root of 3706885820 is about 1547.6392532952.

The spelling of 3706885820 in words is "three billion, seven hundred six million, eight hundred eighty-five thousand, eight hundred twenty".