3623651 has 4 divisors (see below), whose sum is σ = 3669600. Its totient is φ = 3577704.

The previous prime is 3623639. The next prime is 3623657. The reversal of 3623651 is 1563263.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 3623651 - 2¹⁸ = 3361507 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 3623651.

It is not an unprimeable number, because it can be changed into a prime (3623657) 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, 22856 + ... + 23013.

It is an arithmetic number, because the mean of its divisors is an integer number (917400).

Almost surely, 2^3623651 is an apocalyptic number.

3623651 is a deficient number, since it is larger than the sum of its proper divisors (45949).

3623651 is an equidigital number, since it uses as much as digits as its factorization.

3623651 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45948.

The product of its digits is 3240, while the sum is 26.

The square root of 3623651 is about 1903.5889787451. The cubic root of 3623651 is about 153.5967834929.

The spelling of 3623651 in words is "three million, six hundred twenty-three thousand, six hundred fifty-one".