71221763 has 2 divisors, whose sum is σ = 71221764. Its totient is φ = 71221762.

The previous prime is 71221757. The next prime is 71221769. The reversal of 71221763 is 36712217.

It is a balanced prime because it is at equal distance from previous prime (71221757) and next prime (71221769).

It is a cyclic number.

It is not a de Polignac number, because 71221763 - 2²⁴ = 54444547 is a prime.

It is a super-3 number, since 3×71221763³ (a number of 25 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (71221769) 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, 35610881 + 35610882.

It is an arithmetic number, because the mean of its divisors is an integer number (35610882).

Almost surely, 2^71221763 is an apocalyptic number.

71221763 is a deficient number, since it is larger than the sum of its proper divisors (1).

71221763 is an equidigital number, since it uses as much as digits as its factorization.

71221763 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3528, while the sum is 29.

The square root of 71221763 is about 8439.2987267900. The cubic root of 71221763 is about 414.5124443146.

The spelling of 71221763 in words is "seventy-one million, two hundred twenty-one thousand, seven hundred sixty-three".