672427849 has 2 divisors, whose sum is σ = 672427850. Its totient is φ = 672427848.

The previous prime is 672427829. The next prime is 672427883. The reversal of 672427849 is 948724276.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 628404624 + 44023225 = 25068^2 + 6635^2 .

It is a cyclic number.

It is not a de Polignac number, because 672427849 - 2⁵ = 672427817 is a prime.

It is a super-3 number, since 3×672427849³ (a number of 27 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not a weakly prime, because it can be changed into another prime (672427829) 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, 336213924 + 336213925.

It is an arithmetic number, because the mean of its divisors is an integer number (336213925).

Almost surely, 2^672427849 is an apocalyptic number.

It is an amenable number.

672427849 is a deficient number, since it is larger than the sum of its proper divisors (1).

672427849 is an equidigital number, since it uses as much as digits as its factorization.

672427849 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1354752, while the sum is 49.

The square root of 672427849 is about 25931.2137972753. The cubic root of 672427849 is about 876.0896787078.

The spelling of 672427849 in words is "six hundred seventy-two million, four hundred twenty-seven thousand, eight hundred forty-nine".