3685213720 has 16 divisors (see below), whose sum is σ = 8291730960. Its totient is φ = 1474085472.

The previous prime is 3685213717. The next prime is 3685213729. The reversal of 3685213720 is 273125863.

It is a self number, because there is not a number n which added to its sum of digits gives 3685213720.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3685213729) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 46065132 + ... + 46065211.

It is an arithmetic number, because the mean of its divisors is an integer number (518233185).

Almost surely, 2^3685213720 is an apocalyptic number.

It is an amenable number.

3685213720 is an abundant number, since it is smaller than the sum of its proper divisors (4606517240).

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

3685213720 is a wasteful number, since it uses less digits than its factorization.

3685213720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92130354 (or 92130350 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 37.

The square root of 3685213720 is about 60705.9611570396. The cubic root of 3685213720 is about 1544.6172943584.

The spelling of 3685213720 in words is "three billion, six hundred eighty-five million, two hundred thirteen thousand, seven hundred twenty".