672555629 has 2 divisors, whose sum is σ = 672555630. Its totient is φ = 672555628.

The previous prime is 672555613. The next prime is 672555707. The reversal of 672555629 is 926555276.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 630110404 + 42445225 = 25102^2 + 6515^2 .

It is a cyclic number.

It is not a de Polignac number, because 672555629 - 2⁴ = 672555613 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (672555229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 336277814 + 336277815.

It is an arithmetic number, because the mean of its divisors is an integer number (336277815).

Almost surely, 2^672555629 is an apocalyptic number.

It is an amenable number.

672555629 is a deficient number, since it is larger than the sum of its proper divisors (1).

672555629 is an equidigital number, since it uses as much as digits as its factorization.

672555629 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1134000, while the sum is 47.

The square root of 672555629 is about 25933.6775062851. The cubic root of 672555629 is about 876.1451689977.

The spelling of 672555629 in words is "six hundred seventy-two million, five hundred fifty-five thousand, six hundred twenty-nine".