67531 has 2 divisors, whose sum is σ = 67532. Its totient is φ = 67530.
The previous prime is 67523. The next prime is 67537. The reversal of 67531 is 13576.
It is a strong prime.
It is a cyclic number.
It is not a de Polignac number, because 67531 - 23 = 67523 is a prime.
It is a super-2 number, since 2×675312 = 9120871922, which contains 22 as substring.
It is a Chen prime.
It is not a weakly prime, because it can be changed into another prime (67537) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33765 + 33766.
It is an arithmetic number, because the mean of its divisors is an integer number (33766).
267531 is an apocalyptic number.
67531 is a deficient number, since it is larger than the sum of its proper divisors (1).
67531 is an equidigital number, since it uses as much as digits as its factorization.
67531 is an odious number, because the sum of its binary digits is odd.
The product of its digits is 630, while the sum is 22.
The square root of 67531 is about 259.8672738149. The cubic root of 67531 is about 40.7224964021.
The spelling of 67531 in words is "sixty-seven thousand, five hundred thirty-one".
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