3646857 has 16 divisors (see below), whose sum is σ = 5374080. Its totient is φ = 2188032.

The previous prime is 3646829. The next prime is 3646859. The reversal of 3646857 is 7586463.

It is not a de Polignac number, because 3646857 - 2⁶ = 3646793 is a prime.

It is a d-powerful number, because it can be written as 3⁷ + 6⁵ + 4⁶ + 6⁸ + 8 + 5⁹ + 7² .

It is not an unprimeable number, because it can be changed into a prime (3646859) 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, 382 + ... + 2727.

It is an arithmetic number, because the mean of its divisors is an integer number (335880).

Almost surely, 2^3646857 is an apocalyptic number.

It is an amenable number.

3646857 is a deficient number, since it is larger than the sum of its proper divisors (1727223).

3646857 is a wasteful number, since it uses less digits than its factorization.

3646857 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3152.

The product of its digits is 120960, while the sum is 39.

The square root of 3646857 is about 1909.6745796077. The cubic root of 3646857 is about 153.9239659518.

The spelling of 3646857 in words is "three million, six hundred forty-six thousand, eight hundred fifty-seven".