66706833 has 4 divisors (see below), whose sum is σ = 88942448. Its totient is φ = 44471220.

The previous prime is 66706811. The next prime is 66706847. The reversal of 66706833 is 33860766.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 66706833 - 2¹⁰ = 66705809 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 66706791 and 66706800.

It is not an unprimeable number, because it can be changed into a prime (66706033) 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 3 ways as a sum of consecutive naturals, for example, 11117803 + ... + 11117808.

It is an arithmetic number, because the mean of its divisors is an integer number (22235612).

Almost surely, 2^66706833 is an apocalyptic number.

It is an amenable number.

66706833 is a deficient number, since it is larger than the sum of its proper divisors (22235615).

66706833 is a wasteful number, since it uses less digits than its factorization.

66706833 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22235614.

The product of its (nonzero) digits is 108864, while the sum is 39.

The square root of 66706833 is about 8167.4251144409. The cubic root of 66706833 is about 405.5615499402.

The spelling of 66706833 in words is "sixty-six million, seven hundred six thousand, eight hundred thirty-three".