450201636 has 18 divisors (see below), whose sum is σ = 1138009782. Its totient is φ = 150067200.

The previous prime is 450201629. The next prime is 450201659. The reversal of 450201636 is 636102054.

450201636 is a `hidden beast` number, since 4 + 5 + 0 + 20 + 1 + 636 = 666.

It can be written as a sum of positive squares in only one way, i.e., 447068736 + 3132900 = 21144^2 + 1770^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6252765 + ... + 6252836.

Almost surely, 2^450201636 is an apocalyptic number.

It is an amenable number.

450201636 is an abundant number, since it is smaller than the sum of its proper divisors (687808146).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

450201636 is a wasteful number, since it uses less digits than its factorization.

450201636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12505611 (or 12505606 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 27.

The square root of 450201636 is about 21217.9555094264. The cubic root of 450201636 is about 766.4238712795.

It can be divided in two parts, 45020 and 1636, that added together give a 6-th power (46656 = 6⁶).

The spelling of 450201636 in words is "four hundred fifty million, two hundred one thousand, six hundred thirty-six".