66667233 has 4 divisors (see below), whose sum is σ = 88889648. Its totient is φ = 44444820.

The previous prime is 66667193. The next prime is 66667261. The reversal of 66667233 is 33276666.

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 66667233 - 2¹³ = 66659041 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 66667191 and 66667200.

It is not an unprimeable number, because it can be changed into a prime (66667283) 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, 11111203 + ... + 11111208.

It is an arithmetic number, because the mean of its divisors is an integer number (22222412).

Almost surely, 2^66667233 is an apocalyptic number.

It is an amenable number.

66667233 is a deficient number, since it is larger than the sum of its proper divisors (22222415).

66667233 is a wasteful number, since it uses less digits than its factorization.

66667233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22222414.

The product of its digits is 163296, while the sum is 39.

The square root of 66667233 is about 8165.0004898959. Note that the first 3 decimals coincide. The cubic root of 66667233 is about 405.4812812196.

It can be divided in two parts, 6666723 and 3, that added together give a triangular number (6666726 = T₃₆₅₁).

The spelling of 66667233 in words is "sixty-six million, six hundred sixty-seven thousand, two hundred thirty-three".