3643658 has 8 divisors (see below), whose sum is σ = 5486052. Its totient is φ = 1814976.

The previous prime is 3643657. The next prime is 3643669. The reversal of 3643658 is 8563463.

3643658 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 3545689 + 97969 = 1883^2 + 313^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-3 number, since 3×3643658³ (a number of 21 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (3643657) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2735 + ... + 3842.

Almost surely, 2^3643658 is an apocalyptic number.

3643658 is a deficient number, since it is larger than the sum of its proper divisors (1842394).

3643658 is a wasteful number, since it uses less digits than its factorization.

3643658 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6856.

The product of its digits is 51840, while the sum is 35.

The square root of 3643658 is about 1908.8368185887. The cubic root of 3643658 is about 153.8789457408.

The spelling of 3643658 in words is "three million, six hundred forty-three thousand, six hundred fifty-eight".