3656601 has 12 divisors (see below), whose sum is σ = 5688228. Its totient is φ = 2250144.

The previous prime is 3656593. The next prime is 3656617. The reversal of 3656601 is 1066563.

3656601 is a `hidden beast` number, since 3 + 6 + 56 + 601 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 1334025 + 2322576 = 1155^2 + 1524^2 .

It is not a de Polignac number, because 3656601 - 2³ = 3656593 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (3656621) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 15510 + ... + 15743.

It is an arithmetic number, because the mean of its divisors is an integer number (474019).

Almost surely, 2^3656601 is an apocalyptic number.

It is an amenable number.

3656601 is a deficient number, since it is larger than the sum of its proper divisors (2031627).

3656601 is a wasteful number, since it uses less digits than its factorization.

3656601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31272 (or 31269 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 27.

The square root of 3656601 is about 1912.2240977459. The cubic root of 3656601 is about 154.0609333281.

The spelling of 3656601 in words is "three million, six hundred fifty-six thousand, six hundred one".