445636 has 6 divisors (see below), whose sum is σ = 779870. Its totient is φ = 222816.

The previous prime is 445633. The next prime is 445649. The reversal of 445636 is 636544.

It can be written as a sum of positive squares in only one way, i.e., 367236 + 78400 = 606^2 + 280^2 .

It is not an unprimeable number, because it can be changed into a prime (445631) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55701 + ... + 55708.

2⁴⁴⁵⁶³⁶ is an apocalyptic number.

It is an amenable number.

445636 is a deficient number, since it is larger than the sum of its proper divisors (334234).

445636 is a wasteful number, since it uses less digits than its factorization.

445636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111413 (or 111411 counting only the distinct ones).

The product of its digits is 8640, while the sum is 28.

The square root of 445636 is about 667.5597351548. The cubic root of 445636 is about 76.3824215106.

Adding to 445636 its product of digits (8640), we get a square (454276 = 674²).

It can be divided in two parts, 445 and 636, that added together give a triangular number (1081 = T₄₆).

The spelling of 445636 in words is "four hundred forty-five thousand, six hundred thirty-six".