672428833 has 2 divisors, whose sum is σ = 672428834. Its totient is φ = 672428832.

The previous prime is 672428807. The next prime is 672428839. The reversal of 672428833 is 338824276.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 670654609 + 1774224 = 25897^2 + 1332^2 .

It is a cyclic number.

It is not a de Polignac number, because 672428833 - 2⁹ = 672428321 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 672428833.

It is not a weakly prime, because it can be changed into another prime (672428839) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 336214416 + 336214417.

It is an arithmetic number, because the mean of its divisors is an integer number (336214417).

Almost surely, 2^672428833 is an apocalyptic number.

It is an amenable number.

672428833 is a deficient number, since it is larger than the sum of its proper divisors (1).

672428833 is an equidigital number, since it uses as much as digits as its factorization.

672428833 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 387072, while the sum is 43.

The square root of 672428833 is about 25931.2327705414. The cubic root of 672428833 is about 876.0901060507.

The spelling of 672428833 in words is "six hundred seventy-two million, four hundred twenty-eight thousand, eight hundred thirty-three".