66089950 has 48 divisors (see below), whose sum is σ = 127554336. Its totient is φ = 25459200.

The previous prime is 66089929. The next prime is 66089951. The reversal of 66089950 is 5998066.

It is a junction number, because it is equal to n+sod(n) for n = 66089897 and 66089906.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66089951) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 210994 + ... + 211306.

It is an arithmetic number, because the mean of its divisors is an integer number (2657382).

Almost surely, 2^66089950 is an apocalyptic number.

66089950 is a deficient number, since it is larger than the sum of its proper divisors (61464386).

66089950 is a wasteful number, since it uses less digits than its factorization.

66089950 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 469 (or 464 counting only the distinct ones).

The product of its (nonzero) digits is 116640, while the sum is 43.

The square root of 66089950 is about 8129.5725594892. The cubic root of 66089950 is about 404.3075093981.

The spelling of 66089950 in words is "sixty-six million, eighty-nine thousand, nine hundred fifty".