78743611 has 2 divisors, whose sum is σ = 78743612. Its totient is φ = 78743610.

The previous prime is 78743579. The next prime is 78743629. The reversal of 78743611 is 11634787.

It is a strong prime.

It is an emirp because it is prime and its reverse (11634787) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 78743611 - 2⁵ = 78743579 is a prime.

It is not a weakly prime, because it can be changed into another prime (78743641) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39371805 + 39371806.

It is an arithmetic number, because the mean of its divisors is an integer number (39371806).

Almost surely, 2^78743611 is an apocalyptic number.

78743611 is a deficient number, since it is larger than the sum of its proper divisors (1).

78743611 is an equidigital number, since it uses as much as digits as its factorization.

78743611 is an evil number, because the sum of its binary digits is even.

The product of its digits is 28224, while the sum is 37.

The square root of 78743611 is about 8873.7596879789. The cubic root of 78743611 is about 428.6193521700.

The spelling of 78743611 in words is "seventy-eight million, seven hundred forty-three thousand, six hundred eleven".