3705381 has 6 divisors (see below), whose sum is σ = 5352230. Its totient is φ = 2470248.

The previous prime is 3705379. The next prime is 3705391. The reversal of 3705381 is 1835073.

It can be written as a sum of positive squares in only one way, i.e., 2772225 + 933156 = 1665^2 + 966^2 .

It is not a de Polignac number, because 3705381 - 2¹ = 3705379 is a prime.

It is a super-2 number, since 2×3705381² = 27459696710322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3705311) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 205846 + ... + 205863.

Almost surely, 2^3705381 is an apocalyptic number.

It is an amenable number.

3705381 is a deficient number, since it is larger than the sum of its proper divisors (1646849).

3705381 is a wasteful number, since it uses less digits than its factorization.

3705381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 411715 (or 411712 counting only the distinct ones).

The product of its (nonzero) digits is 2520, while the sum is 27.

The square root of 3705381 is about 1924.9366223333. The cubic root of 3705381 is about 154.7429802215.

The spelling of 3705381 in words is "three million, seven hundred five thousand, three hundred eighty-one".