672275881 has 2 divisors, whose sum is σ = 672275882. Its totient is φ = 672275880.

The previous prime is 672275867. The next prime is 672275911. The reversal of 672275881 is 188572276.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 516425625 + 155850256 = 22725^2 + 12484^2 .

It is a cyclic number.

It is not a de Polignac number, because 672275881 - 2⁷ = 672275753 is a prime.

It is a super-2 number, since 2×672275881² = 903909720348652322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (672275801) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 336137940 + 336137941.

It is an arithmetic number, because the mean of its divisors is an integer number (336137941).

Almost surely, 2^672275881 is an apocalyptic number.

It is an amenable number.

672275881 is a deficient number, since it is larger than the sum of its proper divisors (1).

672275881 is an equidigital number, since it uses as much as digits as its factorization.

672275881 is an evil number, because the sum of its binary digits is even.

The product of its digits is 376320, while the sum is 46.

The square root of 672275881 is about 25928.2834179203. The cubic root of 672275881 is about 876.0236752808.

The spelling of 672275881 in words is "six hundred seventy-two million, two hundred seventy-five thousand, eight hundred eighty-one".