78226711 has 2 divisors, whose sum is σ = 78226712. Its totient is φ = 78226710.

The previous prime is 78226699. The next prime is 78226723. The reversal of 78226711 is 11762287.

It is a happy number.

It is a balanced prime because it is at equal distance from previous prime (78226699) and next prime (78226723).

It is a cyclic number.

It is not a de Polignac number, because 78226711 - 2¹⁹ = 77702423 is a prime.

It is a super-2 number, since 2×78226711² = 12238836627755042, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (78226411) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39113355 + 39113356.

It is an arithmetic number, because the mean of its divisors is an integer number (39113356).

Almost surely, 2^78226711 is an apocalyptic number.

78226711 is a deficient number, since it is larger than the sum of its proper divisors (1).

78226711 is an equidigital number, since it uses as much as digits as its factorization.

78226711 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 9408, while the sum is 34.

The square root of 78226711 is about 8844.5865364075. The cubic root of 78226711 is about 427.6794244730.

Adding to 78226711 its reverse (11762287), we get a palindrome (89988998).

The spelling of 78226711 in words is "seventy-eight million, two hundred twenty-six thousand, seven hundred eleven".