672229447 has 2 divisors, whose sum is σ = 672229448. Its totient is φ = 672229446.

The previous prime is 672229433. The next prime is 672229457. The reversal of 672229447 is 744922276.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 672229447 - 2²³ = 663840839 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (672229457) 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, 336114723 + 336114724.

It is an arithmetic number, because the mean of its divisors is an integer number (336114724).

Almost surely, 2^672229447 is an apocalyptic number.

672229447 is a deficient number, since it is larger than the sum of its proper divisors (1).

672229447 is an equidigital number, since it uses as much as digits as its factorization.

672229447 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 338688, while the sum is 43.

The square root of 672229447 is about 25927.3879710240. The cubic root of 672229447 is about 876.0035058727.

The spelling of 672229447 in words is "six hundred seventy-two million, two hundred twenty-nine thousand, four hundred forty-seven".