3616643 has 4 divisors (see below), whose sum is σ = 3620448. Its totient is φ = 3612840.

The previous prime is 3616637. The next prime is 3616649. The reversal of 3616643 is 3466163.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 3466163 = 83 ⋅41761.

It is an interprime number because it is at equal distance from previous prime (3616637) and next prime (3616649).

It is a cyclic number.

It is not a de Polignac number, because 3616643 - 2¹² = 3612547 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3616649) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 905 + ... + 2837.

It is an arithmetic number, because the mean of its divisors is an integer number (905112).

Almost surely, 2^3616643 is an apocalyptic number.

3616643 is a deficient number, since it is larger than the sum of its proper divisors (3805).

3616643 is a wasteful number, since it uses less digits than its factorization.

3616643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3804.

The product of its digits is 7776, while the sum is 29.

The square root of 3616643 is about 1901.7473544086. The cubic root of 3616643 is about 153.4977028590.

The spelling of 3616643 in words is "three million, six hundred sixteen thousand, six hundred forty-three".