672289 has 2 divisors, whose sum is σ = 672290. Its totient is φ = 672288.

The previous prime is 672283. The next prime is 672293. The reversal of 672289 is 982276.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 380689 + 291600 = 617^2 + 540^2 .

It is a cyclic number.

It is not a de Polignac number, because 672289 - 2⁹ = 671777 is a prime.

It is a nialpdrome in base 16.

It is not a weakly prime, because it can be changed into another prime (672283) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 336144 + 336145.

It is an arithmetic number, because the mean of its divisors is an integer number (336145).

2⁶⁷²²⁸⁹ is an apocalyptic number.

It is an amenable number.

672289 is a deficient number, since it is larger than the sum of its proper divisors (1).

672289 is an equidigital number, since it uses as much as digits as its factorization.

672289 is an evil number, because the sum of its binary digits is even.

The product of its digits is 12096, while the sum is 34.

The square root of 672289 is about 819.9323142797. The cubic root of 672289 is about 87.6029373576.

It can be divided in two parts, 672 and 289, that added together give a square (961 = 31²).

The spelling of 672289 in words is "six hundred seventy-two thousand, two hundred eighty-nine".