672389629 has 2 divisors, whose sum is σ = 672389630. Its totient is φ = 672389628.

The previous prime is 672389617. The next prime is 672389657. The reversal of 672389629 is 926983276.

672389629 is nontrivially palindromic in base 7.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 551169529 + 121220100 = 23477^2 + 11010^2 .

It is a cyclic number.

It is not a de Polignac number, because 672389629 - 2²⁹ = 135518717 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (672389609) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 336194814 + 336194815.

It is an arithmetic number, because the mean of its divisors is an integer number (336194815).

Almost surely, 2^672389629 is an apocalyptic number.

It is an amenable number.

672389629 is a deficient number, since it is larger than the sum of its proper divisors (1).

672389629 is an equidigital number, since it uses as much as digits as its factorization.

672389629 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1959552, while the sum is 52.

The square root of 672389629 is about 25930.4768371120. The cubic root of 672389629 is about 876.0730797612.

It can be divided in two parts, 67238 and 9629, that added together give a palindrome (76867).

The spelling of 672389629 in words is "six hundred seventy-two million, three hundred eighty-nine thousand, six hundred twenty-nine".