3645715 has 4 divisors (see below), whose sum is σ = 4374864. Its totient is φ = 2916568.

The previous prime is 3645713. The next prime is 3645727. The reversal of 3645715 is 5175463.

3645715 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5175463 = 17 ⋅304439.

It is a cyclic number.

It is not a de Polignac number, because 3645715 - 2¹ = 3645713 is a prime.

It is a super-2 number, since 2×3645715² = 26582475722450, which contains 22 as substring.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3645713) 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, 364567 + ... + 364576.

It is an arithmetic number, because the mean of its divisors is an integer number (1093716).

Almost surely, 2^3645715 is an apocalyptic number.

3645715 is a deficient number, since it is larger than the sum of its proper divisors (729149).

3645715 is an equidigital number, since it uses as much as digits as its factorization.

3645715 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 729148.

The product of its digits is 12600, while the sum is 31.

The square root of 3645715 is about 1909.3755523731. The cubic root of 3645715 is about 153.9078973644.

The spelling of 3645715 in words is "three million, six hundred forty-five thousand, seven hundred fifteen".