3645266 has 4 divisors (see below), whose sum is σ = 5467902. Its totient is φ = 1822632.

The previous prime is 3645263. The next prime is 3645289. The reversal of 3645266 is 6625463.

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

It can be written as a sum of positive squares in only one way, i.e., 2468041 + 1177225 = 1571^2 + 1085^2 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (3645263) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 911315 + ... + 911318.

Almost surely, 2^3645266 is an apocalyptic number.

3645266 is a deficient number, since it is larger than the sum of its proper divisors (1822636).

3645266 is a wasteful number, since it uses less digits than its factorization.

3645266 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1822635.

The product of its digits is 25920, while the sum is 32.

The square root of 3645266 is about 1909.2579710453. The cubic root of 3645266 is about 153.9015787609.

The spelling of 3645266 in words is "three million, six hundred forty-five thousand, two hundred sixty-six".