66489436 has 48 divisors (see below), whose sum is σ = 133005600. Its totient is φ = 28829952.

The previous prime is 66489421. The next prime is 66489503. The reversal of 66489436 is 63498466.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 170730 + ... + 171118.

It is an arithmetic number, because the mean of its divisors is an integer number (2770950).

Almost surely, 2^66489436 is an apocalyptic number.

It is an amenable number.

66489436 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

66489436 is a wasteful number, since it uses less digits than its factorization.

66489436 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 598 (or 596 counting only the distinct ones).

The product of its digits is 746496, while the sum is 46.

The square root of 66489436 is about 8154.1054690260. The cubic root of 66489436 is about 405.1204965852.

It can be divided in two parts, 664 and 89436, that added together give a triangular number (90100 = T₄₂₄).

The spelling of 66489436 in words is "sixty-six million, four hundred eighty-nine thousand, four hundred thirty-six".