672182081 has 2 divisors, whose sum is σ = 672182082. Its totient is φ = 672182080.

The previous prime is 672182059. The next prime is 672182113. The reversal of 672182081 is 180281276.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 346704400 + 325477681 = 18620^2 + 18041^2 .

It is a cyclic number.

It is not a de Polignac number, because 672182081 - 2¹⁰ = 672181057 is a prime.

It is a super-2 number, since 2×672182081² = 903657500034981122, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (672182041) 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, 336091040 + 336091041.

It is an arithmetic number, because the mean of its divisors is an integer number (336091041).

Almost surely, 2^672182081 is an apocalyptic number.

It is an amenable number.

672182081 is a deficient number, since it is larger than the sum of its proper divisors (1).

672182081 is an equidigital number, since it uses as much as digits as its factorization.

672182081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10752, while the sum is 35.

The square root of 672182081 is about 25926.4745193017. The cubic root of 672182081 is about 875.9829306773.

The spelling of 672182081 in words is "six hundred seventy-two million, one hundred eighty-two thousand, eighty-one".