78754213 has 2 divisors, whose sum is σ = 78754214. Its totient is φ = 78754212.

The previous prime is 78754211. The next prime is 78754261. The reversal of 78754213 is 31245787.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 73564929 + 5189284 = 8577^2 + 2278^2 .

It is a cyclic number.

It is not a de Polignac number, because 78754213 - 2¹ = 78754211 is a prime.

Together with 78754211, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (78754211) 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, 39377106 + 39377107.

It is an arithmetic number, because the mean of its divisors is an integer number (39377107).

Almost surely, 2^78754213 is an apocalyptic number.

It is an amenable number.

78754213 is a deficient number, since it is larger than the sum of its proper divisors (1).

78754213 is an equidigital number, since it uses as much as digits as its factorization.

78754213 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 47040, while the sum is 37.

The square root of 78754213 is about 8874.3570471330. The cubic root of 78754213 is about 428.6385876711.

The spelling of 78754213 in words is "seventy-eight million, seven hundred fifty-four thousand, two hundred thirteen".