672647149 has 2 divisors, whose sum is σ = 672647150. Its totient is φ = 672647148.

The previous prime is 672647093. The next prime is 672647153. The reversal of 672647149 is 941746276.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 647346249 + 25300900 = 25443^2 + 5030^2 .

It is a cyclic number.

It is not a de Polignac number, because 672647149 - 2¹³ = 672638957 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 672647099 and 672647108.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (672647249) 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, 336323574 + 336323575.

It is an arithmetic number, because the mean of its divisors is an integer number (336323575).

Almost surely, 2^672647149 is an apocalyptic number.

It is an amenable number.

672647149 is a deficient number, since it is larger than the sum of its proper divisors (1).

672647149 is an equidigital number, since it uses as much as digits as its factorization.

672647149 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 508032, while the sum is 46.

The square root of 672647149 is about 25935.4419472659. The cubic root of 672647149 is about 876.1849085452.

The spelling of 672647149 in words is "six hundred seventy-two million, six hundred forty-seven thousand, one hundred forty-nine".