673236666 has 12 divisors (see below), whose sum is σ = 1458679482. Its totient is φ = 224412216.

The previous prime is 673236659. The next prime is 673236667. The reversal of 673236666 is 666632376.

It can be written as a sum of positive squares in only one way, i.e., 669515625 + 3721041 = 25875^2 + 1929^2 .

It is not an unprimeable number, because it can be changed into a prime (673236667) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 18701001 + ... + 18701036.

Almost surely, 2^673236666 is an apocalyptic number.

673236666 is an abundant number, since it is smaller than the sum of its proper divisors (785442816).

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

673236666 is a wasteful number, since it uses less digits than its factorization.

673236666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37402045 (or 37402042 counting only the distinct ones).

The product of its digits is 979776, while the sum is 45.

The square root of 673236666 is about 25946.8045431417. The cubic root of 673236666 is about 876.4408005465.

The spelling of 673236666 in words is "six hundred seventy-three million, two hundred thirty-six thousand, six hundred sixty-six".