3705397 has 4 divisors (see below), whose sum is σ = 3709420. Its totient is φ = 3701376.

The previous prime is 3705391. The next prime is 3705409. The reversal of 3705397 is 7935073.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 1100401 + 2604996 = 1049^2 + 1614^2 .

It is a cyclic number.

It is not a de Polignac number, because 3705397 - 2¹⁹ = 3181109 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3705391) 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, 133 + ... + 2725.

It is an arithmetic number, because the mean of its divisors is an integer number (927355).

Almost surely, 2^3705397 is an apocalyptic number.

It is an amenable number.

3705397 is a deficient number, since it is larger than the sum of its proper divisors (4023).

3705397 is a wasteful number, since it uses less digits than its factorization.

3705397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4022.

The product of its (nonzero) digits is 19845, while the sum is 34.

The square root of 3705397 is about 1924.9407783098. The cubic root of 3705397 is about 154.7432029502.

The spelling of 3705397 in words is "three million, seven hundred five thousand, three hundred ninety-seven".