662941 has 2 divisors, whose sum is σ = 662942.
Its totient is φ = 662940.
The previous prime is 662939. The next prime is 662947. The reversal of 662941 is 149266.
It can be divided in two parts, 6629 and 41, that added together give a triangular number (6670 = T115).
It is a weak prime.
It can be written as a sum of positive squares in only one way, i.e., 427716 + 235225 = 654^2 + 485^2
It is a cyclic number.
It is not a de Polignac number, because 662941 - 21 = 662939 is a prime.
Together with 662939, it forms a pair of twin primes.
662941 is a lucky number.
It is a congruent number.
It is not a weakly prime, because it can be changed into another prime (662947) 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, 331470 + 331471.
It is an arithmetic number, because the mean of its divisors is an integer number (331471).
2662941 is an apocalyptic number.
It is an amenable number.
662941 is a deficient number, since it is larger than the sum of its proper divisors (1).
662941 is an equidigital number, since it uses as much as digits as its factorization.
662941 is an odious number, because the sum of its binary digits is odd.
The product of its digits is 2592, while the sum is 28.
The square root of 662941 is about 814.2118888840.
The cubic root of 662941 is about 87.1950089027.
The spelling of 662941 in words is "six hundred sixty-two thousand, nine hundred forty-one".