672277729 has 2 divisors, whose sum is σ = 672277730. Its totient is φ = 672277728.

The previous prime is 672277709. The next prime is 672277757. The reversal of 672277729 is 927772276.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 611078400 + 61199329 = 24720^2 + 7823^2 .

It is a cyclic number.

It is not a de Polignac number, because 672277729 - 2¹⁹ = 671753441 is a prime.

It is not a weakly prime, because it can be changed into another prime (672277709) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 336138864 + 336138865.

It is an arithmetic number, because the mean of its divisors is an integer number (336138865).

Almost surely, 2^672277729 is an apocalyptic number.

It is an amenable number.

672277729 is a deficient number, since it is larger than the sum of its proper divisors (1).

672277729 is an equidigital number, since it uses as much as digits as its factorization.

672277729 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1037232, while the sum is 49.

The square root of 672277729 is about 25928.3190546553. The cubic root of 672277729 is about 876.0244779723.

The spelling of 672277729 in words is "six hundred seventy-two million, two hundred seventy-seven thousand, seven hundred twenty-nine".