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773 is a prime number

773 has 2 divisors, whose sum is σ = 774. Its totient is φ = 772.

The previous prime is 769. The next prime is 787. The reversal of 773 is 377.

773 is nontrivially palindromic in base 12 and base 14.

773 is an esthetic number in base 12, because in such base its adjacent digits differ by 1.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 484 + 289 = 22^2 + 17^2 .

773 is a truncatable prime.

It is a cyclic number.

It is not a de Polignac number, because 773 - 22 = 769 is a prime.

It is a tetranacci number.

773 is an undulating number in base 12 and base 14.

It is a plaindrome in base 15.

It is a nialpdrome in base 10 and base 11.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (733) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 386 + 387.

It is an arithmetic number, because the mean of its divisors is an integer number (387).

It is an amenable number.

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

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

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

The product of its digits is 147, while the sum is 17.

The square root of 773 is about 27.8028775489. The cubic root of 773 is about 9.1775444786.

Subtracting from 773 its product of digits (147), we obtain a palindrome (626).

It can be divided in two parts, 77 and 3, that multiplied together give a triangular number (231 = T21).

The spelling of 773 in words is "seven hundred seventy-three", and thus it is an aban number, an iban number, and an oban number.