3628749 has 4 divisors (see below), whose sum is σ = 4838336. Its totient is φ = 2419164.

The previous prime is 3628747. The next prime is 3628759. The reversal of 3628749 is 9478263.

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: 9478263 = 3 ⋅3159421.

It is not a de Polignac number, because 3628749 - 2¹ = 3628747 is a prime.

It is a d-powerful number, because it can be written as 3¹¹ + 6⁷ + 2¹⁹ + 8⁷ + 7⁴ + 4⁷ + 9⁶ .

It is a D-number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3628747) 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, 604789 + ... + 604794.

It is an arithmetic number, because the mean of its divisors is an integer number (1209584).

Almost surely, 2^3628749 is an apocalyptic number.

It is an amenable number.

3628749 is a deficient number, since it is larger than the sum of its proper divisors (1209587).

3628749 is a wasteful number, since it uses less digits than its factorization.

3628749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1209586.

The product of its digits is 72576, while the sum is 39.

The square root of 3628749 is about 1904.9275576777. The cubic root of 3628749 is about 153.6687798928.

The spelling of 3628749 in words is "three million, six hundred twenty-eight thousand, seven hundred forty-nine".