3630745 has 4 divisors (see below), whose sum is σ = 4356900. Its totient is φ = 2904592.

The previous prime is 3630743. The next prime is 3630749. The reversal of 3630745 is 5470363.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5470363 = 181 ⋅30223.

It can be written as a sum of positive squares in 2 ways, for example, as 2152089 + 1478656 = 1467^2 + 1216^2 .

It is a cyclic number.

It is not a de Polignac number, because 3630745 - 2¹ = 3630743 is a prime.

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

It is not an unprimeable number, because it can be changed into a prime (3630743) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 363070 + ... + 363079.

It is an arithmetic number, because the mean of its divisors is an integer number (1089225).

Almost surely, 2^3630745 is an apocalyptic number.

It is an amenable number.

3630745 is a deficient number, since it is larger than the sum of its proper divisors (726155).

3630745 is an equidigital number, since it uses as much as digits as its factorization.

3630745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 726154.

The product of its (nonzero) digits is 7560, while the sum is 28.

The square root of 3630745 is about 1905.4513900911. The cubic root of 3630745 is about 153.6969499926.

The spelling of 3630745 in words is "three million, six hundred thirty thousand, seven hundred forty-five".