672066671833 has 4 divisors (see below), whose sum is σ = 672069052980. Its totient is φ = 672064290688.

The previous prime is 672066671827. The next prime is 672066671851. The reversal of 672066671833 is 338176660276.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 609879778704 + 62186893129 = 780948^2 + 249373^2 .

It is a cyclic number.

It is not a de Polignac number, because 672066671833 - 2¹³ = 672066663641 is a prime.

It is a super-2 number, since 2×672066671833² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (672066671233) 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, 699760 + ... + 1354177.

It is an arithmetic number, because the mean of its divisors is an integer number (168017263245).

Almost surely, 2^672066671833 is an apocalyptic number.

It is an amenable number.

672066671833 is a deficient number, since it is larger than the sum of its proper divisors (2381147).

672066671833 is a wasteful number, since it uses less digits than its factorization.

672066671833 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2381146.

The product of its (nonzero) digits is 9144576, while the sum is 55.

The spelling of 672066671833 in words is "six hundred seventy-two billion, sixty-six million, six hundred seventy-one thousand, eight hundred thirty-three".