3685290 has 96 divisors (see below), whose sum is σ = 10834560. Its totient is φ = 798336.

The previous prime is 3685289. The next prime is 3685301. The reversal of 3685290 is 925863.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 33756 + ... + 33864.

It is an arithmetic number, because the mean of its divisors is an integer number (112860).

Almost surely, 2^3685290 is an apocalyptic number.

3685290 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 3685290, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5417280).

3685290 is an abundant number, since it is smaller than the sum of its proper divisors (7149270).

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

3685290 is a wasteful number, since it uses less digits than its factorization.

3685290 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 156 (or 149 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 33.

The square root of 3685290 is about 1919.7109157371. The cubic root of 3685290 is about 154.4627951596.

The spelling of 3685290 in words is "three million, six hundred eighty-five thousand, two hundred ninety".