78545347 has 2 divisors, whose sum is σ = 78545348. Its totient is φ = 78545346.

The previous prime is 78545333. The next prime is 78545353. The reversal of 78545347 is 74354587.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 78545347 - 2¹¹ = 78543299 is a prime.

It is not a weakly prime, because it can be changed into another prime (78545387) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39272673 + 39272674.

It is an arithmetic number, because the mean of its divisors is an integer number (39272674).

Almost surely, 2^78545347 is an apocalyptic number.

78545347 is a deficient number, since it is larger than the sum of its proper divisors (1).

78545347 is an equidigital number, since it uses as much as digits as its factorization.

78545347 is an evil number, because the sum of its binary digits is even.

The product of its digits is 470400, while the sum is 43.

The square root of 78545347 is about 8862.5812831251. The cubic root of 78545347 is about 428.2593178426.

The spelling of 78545347 in words is "seventy-eight million, five hundred forty-five thousand, three hundred forty-seven".