66089850 has 48 divisors (see below), whose sum is σ = 164400192. Its totient is φ = 17570560.

The previous prime is 66089819. The next prime is 66089857. The reversal of 66089850 is 5898066.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (66089857) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 88579 + ... + 89321.

It is an arithmetic number, because the mean of its divisors is an integer number (3425004).

Almost surely, 2^66089850 is an apocalyptic number.

66089850 is an abundant number, since it is smaller than the sum of its proper divisors (98310342).

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

66089850 is a wasteful number, since it uses less digits than its factorization.

66089850 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1351 (or 1346 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 42.

The square root of 66089850 is about 8129.5664091020. The cubic root of 66089850 is about 404.3073054802.

The spelling of 66089850 in words is "sixty-six million, eighty-nine thousand, eight hundred fifty".