78662341 has 2 divisors, whose sum is σ = 78662342. Its totient is φ = 78662340.

The previous prime is 78662329. The next prime is 78662347. The reversal of 78662341 is 14326687.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 62742241 + 15920100 = 7921^2 + 3990^2 .

It is a cyclic number.

It is not a de Polignac number, because 78662341 - 2²¹ = 76565189 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 78662341.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (78662347) 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, 39331170 + 39331171.

It is an arithmetic number, because the mean of its divisors is an integer number (39331171).

Almost surely, 2^78662341 is an apocalyptic number.

It is an amenable number.

78662341 is a deficient number, since it is larger than the sum of its proper divisors (1).

78662341 is an equidigital number, since it uses as much as digits as its factorization.

78662341 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 48384, while the sum is 37.

The square root of 78662341 is about 8869.1792743185. The cubic root of 78662341 is about 428.4718443912.

It can be divided in two parts, 78662 and 341, that added together give a triangular number (79003 = T₃₉₇).

The spelling of 78662341 in words is "seventy-eight million, six hundred sixty-two thousand, three hundred forty-one".