66500833 has 8 divisors (see below), whose sum is σ = 77768768. Its totient is φ = 55674864.

The previous prime is 66500831. The next prime is 66500851. The reversal of 66500833 is 33800566.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 66500833 - 2¹ = 66500831 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 66500795 and 66500804.

It is not an unprimeable number, because it can be changed into a prime (66500831) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 110166 + ... + 110767.

It is an arithmetic number, because the mean of its divisors is an integer number (9721096).

Almost surely, 2^66500833 is an apocalyptic number.

It is an amenable number.

66500833 is a deficient number, since it is larger than the sum of its proper divisors (11267935).

66500833 is a wasteful number, since it uses less digits than its factorization.

66500833 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 220983.

The product of its (nonzero) digits is 12960, while the sum is 31.

The square root of 66500833 is about 8154.8042894971. The cubic root of 66500833 is about 405.1436425905.

The spelling of 66500833 in words is "sixty-six million, five hundred thousand, eight hundred thirty-three".