3705691 has 16 divisors (see below), whose sum is σ = 4290048. Its totient is φ = 3168000.

The previous prime is 3705679. The next prime is 3705719. The reversal of 3705691 is 1965073.

It is not a de Polignac number, because 3705691 - 2⁵ = 3705659 is a prime.

It is a Duffinian 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 15 ways as a sum of consecutive naturals, for example, 24466 + ... + 24616.

It is an arithmetic number, because the mean of its divisors is an integer number (268128).

Almost surely, 2^3705691 is an apocalyptic number.

3705691 is a deficient number, since it is larger than the sum of its proper divisors (584357).

3705691 is a wasteful number, since it uses less digits than its factorization.

3705691 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 282.

The product of its (nonzero) digits is 5670, while the sum is 31.

The square root of 3705691 is about 1925.0171427808. The cubic root of 3705691 is about 154.7472954760.

The spelling of 3705691 in words is "three million, seven hundred five thousand, six hundred ninety-one".