68913547 has 2 divisors, whose sum is σ = 68913548. Its totient is φ = 68913546.

The previous prime is 68913521. The next prime is 68913569. The reversal of 68913547 is 74531986.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 68913547 - 2²³ = 60524939 is a prime.

It is not a weakly prime, because it can be changed into another prime (68913577) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34456773 + 34456774.

It is an arithmetic number, because the mean of its divisors is an integer number (34456774).

Almost surely, 2^68913547 is an apocalyptic number.

68913547 is a deficient number, since it is larger than the sum of its proper divisors (1).

68913547 is an equidigital number, since it uses as much as digits as its factorization.

68913547 is an evil number, because the sum of its binary digits is even.

The product of its digits is 181440, while the sum is 43.

The square root of 68913547 is about 8301.4183727843. The cubic root of 68913547 is about 409.9852205658.

The spelling of 68913547 in words is "sixty-eight million, nine hundred thirteen thousand, five hundred forty-seven".