3865697 has 4 divisors (see below), whose sum is σ = 4217136. Its totient is φ = 3514260.

The previous prime is 3865691. The next prime is 3865733. The reversal of 3865697 is 7965683.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 7965683 = 11 ⋅724153.

It is a cyclic number.

It is not a de Polignac number, because 3865697 - 2¹⁰ = 3864673 is a prime.

It is a super-2 number, since 2×3865697² = 29887226591618, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (3865691) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 175703 + ... + 175724.

It is an arithmetic number, because the mean of its divisors is an integer number (1054284).

Almost surely, 2^3865697 is an apocalyptic number.

It is an amenable number.

3865697 is a deficient number, since it is larger than the sum of its proper divisors (351439).

3865697 is a wasteful number, since it uses less digits than its factorization.

3865697 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 351438.

The product of its digits is 272160, while the sum is 44.

The square root of 3865697 is about 1966.1375841990. The cubic root of 3865697 is about 156.9432361361.

The spelling of 3865697 in words is "three million, eight hundred sixty-five thousand, six hundred ninety-seven".