78466351 has 2 divisors, whose sum is σ = 78466352. Its totient is φ = 78466350.

The previous prime is 78466337. The next prime is 78466361. The reversal of 78466351 is 15366487.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 78466351 - 2¹⁵ = 78433583 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (78466361) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39233175 + 39233176.

It is an arithmetic number, because the mean of its divisors is an integer number (39233176).

Almost surely, 2^78466351 is an apocalyptic number.

78466351 is a deficient number, since it is larger than the sum of its proper divisors (1).

78466351 is an equidigital number, since it uses as much as digits as its factorization.

78466351 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 120960, while the sum is 40.

The square root of 78466351 is about 8858.1234468707. The cubic root of 78466351 is about 428.1156975335.

The spelling of 78466351 in words is "seventy-eight million, four hundred sixty-six thousand, three hundred fifty-one".