3628945 has 4 divisors (see below), whose sum is σ = 4354740. Its totient is φ = 2903152.

The previous prime is 3628931. The next prime is 3628949. The reversal of 3628945 is 5498263.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5498263 = 941 ⋅5843.

It can be written as a sum of positive squares in 2 ways, for example, as 646416 + 2982529 = 804^2 + 1727^2 .

It is a cyclic number.

It is not a de Polignac number, because 3628945 - 2¹¹ = 3626897 is a prime.

It is a d-powerful number, because it can be written as 3¹³ + 6⁶ + 2¹¹ + 8⁵ + 9 + 4² + 5⁹ .

It is not an unprimeable number, because it can be changed into a prime (3628949) 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, 362890 + ... + 362899.

It is an arithmetic number, because the mean of its divisors is an integer number (1088685).

Almost surely, 2^3628945 is an apocalyptic number.

It is an amenable number.

3628945 is a deficient number, since it is larger than the sum of its proper divisors (725795).

3628945 is an equidigital number, since it uses as much as digits as its factorization.

3628945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 725794.

The product of its digits is 51840, while the sum is 37.

The square root of 3628945 is about 1904.9790025090. The cubic root of 3628945 is about 153.6715465523.

The spelling of 3628945 in words is "three million, six hundred twenty-eight thousand, nine hundred forty-five".