3663601 has 4 divisors (see below), whose sum is σ = 3822912. Its totient is φ = 3504292.

The previous prime is 3663587. The next prime is 3663617. The reversal of 3663601 is 1063663.

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: 1063663 = 41 ⋅25943.

It is a cyclic number.

It is not a de Polignac number, because 3663601 - 2⁹ = 3663089 is a prime.

It is a Duffinian number.

3663601 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (3663661) 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, 79621 + ... + 79666.

It is an arithmetic number, because the mean of its divisors is an integer number (955728).

Almost surely, 2^3663601 is an apocalyptic number.

It is an amenable number.

3663601 is a deficient number, since it is larger than the sum of its proper divisors (159311).

3663601 is a wasteful number, since it uses less digits than its factorization.

3663601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 159310.

The product of its (nonzero) digits is 1944, while the sum is 25.

The square root of 3663601 is about 1914.0535520199. The cubic root of 3663601 is about 154.1591793133.

The spelling of 3663601 in words is "three million, six hundred sixty-three thousand, six hundred one".