3806657 has 4 divisors (see below), whose sum is σ = 4030596. Its totient is φ = 3582720.

The previous prime is 3806653. The next prime is 3806659. The reversal of 3806657 is 7566083.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2989441 + 817216 = 1729^2 + 904^2 .

It is a cyclic number.

It is not a de Polignac number, because 3806657 - 2² = 3806653 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3806653) 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, 111944 + ... + 111977.

It is an arithmetic number, because the mean of its divisors is an integer number (1007649).

Almost surely, 2^3806657 is an apocalyptic number.

It is an amenable number.

3806657 is a deficient number, since it is larger than the sum of its proper divisors (223939).

3806657 is a wasteful number, since it uses less digits than its factorization.

3806657 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 223938.

The product of its (nonzero) digits is 30240, while the sum is 35.

The square root of 3806657 is about 1951.0656062778. The cubic root of 3806657 is about 156.1401463574.

The spelling of 3806657 in words is "three million, eight hundred six thousand, six hundred fifty-seven".