3642505 has 8 divisors (see below), whose sum is σ = 4628232. Its totient is φ = 2742528.

The previous prime is 3642497. The next prime is 3642559. The reversal of 3642505 is 5052463.

3642505 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 2064969 + 1577536 = 1437^2 + 1256^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 3642505 - 2³ = 3642497 is a prime.

It is a d-powerful number, because it can be written as 3¹³ + 6² + 4⁷ + 2⁹ + 5⁷ + 0 + 5⁹ .

It is a Duffinian number.

3642505 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 3642505.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 21342 + ... + 21511.

It is an arithmetic number, because the mean of its divisors is an integer number (578529).

Almost surely, 2^3642505 is an apocalyptic number.

It is an amenable number.

3642505 is a deficient number, since it is larger than the sum of its proper divisors (985727).

3642505 is a wasteful number, since it uses less digits than its factorization.

3642505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42875.

The product of its (nonzero) digits is 3600, while the sum is 25.

The square root of 3642505 is about 1908.5347783051. The cubic root of 3642505 is about 153.8627128651.

Adding to 3642505 its reverse (5052463), we get a palindrome (8694968).

The spelling of 3642505 in words is "three million, six hundred forty-two thousand, five hundred five".