623071 has 2 divisors, whose sum is σ = 623072. Its totient is φ = 623070.

The previous prime is 623059. The next prime is 623107. The reversal of 623071 is 170326.

623071 = T₆₄₃ + T₆₄₄ + T₆₄₅.

Together with next prime (623107) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 623071 - 2⁷ = 622943 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (623041) 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, 311535 + 311536.

It is an arithmetic number, because the mean of its divisors is an integer number (311536).

2⁶²³⁰⁷¹ is an apocalyptic number.

623071 is the 645-th centered triangular number.

623071 is a deficient number, since it is larger than the sum of its proper divisors (1).

623071 is an equidigital number, since it uses as much as digits as its factorization.

623071 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 252, while the sum is 19.

The square root of 623071 is about 789.3484655081. The cubic root of 623071 is about 85.4107455212.

Adding to 623071 its reverse (170326), we get a palindrome (793397).

The spelling of 623071 in words is "six hundred twenty-three thousand, seventy-one".