3652729 has 4 divisors (see below), whose sum is σ = 3690484. Its totient is φ = 3614976.

The previous prime is 3652703. The next prime is 3652757. The reversal of 3652729 is 9272563.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 2325625 + 1327104 = 1525^2 + 1152^2 .

It is a cyclic number.

It is not a de Polignac number, because 3652729 - 2⁵ = 3652697 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3652694 and 3652703.

It is not an unprimeable number, because it can be changed into a prime (3652829) 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, 18732 + ... + 18925.

It is an arithmetic number, because the mean of its divisors is an integer number (922621).

Almost surely, 2^3652729 is an apocalyptic number.

It is an amenable number.

3652729 is a deficient number, since it is larger than the sum of its proper divisors (37755).

3652729 is an equidigital number, since it uses as much as digits as its factorization.

3652729 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37754.

The product of its digits is 22680, while the sum is 34.

The square root of 3652729 is about 1911.2113959476. The cubic root of 3652729 is about 154.0065353948.

The spelling of 3652729 in words is "three million, six hundred fifty-two thousand, seven hundred twenty-nine".