66235673 has 4 divisors (see below), whose sum is σ = 75697920. Its totient is φ = 56773428.

The previous prime is 66235667. The next prime is 66235679. The reversal of 66235673 is 37653266.

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 an interprime number because it is at equal distance from previous prime (66235667) and next prime (66235679).

It is a cyclic number.

It is not a de Polignac number, because 66235673 - 2⁴ = 66235657 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (66235679) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4731113 + ... + 4731126.

It is an arithmetic number, because the mean of its divisors is an integer number (18924480).

Almost surely, 2^66235673 is an apocalyptic number.

It is an amenable number.

66235673 is a deficient number, since it is larger than the sum of its proper divisors (9462247).

66235673 is an equidigital number, since it uses as much as digits as its factorization.

66235673 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9462246.

The product of its digits is 136080, while the sum is 38.

The square root of 66235673 is about 8138.5301498489. The cubic root of 66235673 is about 404.6044463949.

The spelling of 66235673 in words is "sixty-six million, two hundred thirty-five thousand, six hundred seventy-three".