623957 has 2 divisors, whose sum is σ = 623958. Its totient is φ = 623956.

The previous prime is 623947. The next prime is 623963. The reversal of 623957 is 759326.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 320356 + 303601 = 566^2 + 551^2 .

It is a cyclic number.

It is not a de Polignac number, because 623957 - 2⁶ = 623893 is a prime.

It is a Chen prime.

It is a nialpdrome in base 16.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (623947) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 311978 + 311979.

It is an arithmetic number, because the mean of its divisors is an integer number (311979).

2⁶²³⁹⁵⁷ is an apocalyptic number.

It is an amenable number.

623957 is a deficient number, since it is larger than the sum of its proper divisors (1).

623957 is an equidigital number, since it uses as much as digits as its factorization.

623957 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 11340, while the sum is 32.

The square root of 623957 is about 789.9094884859. The cubic root of 623957 is about 85.4512107222.

The spelling of 623957 in words is "six hundred twenty-three thousand, nine hundred fifty-seven".