68387547 has 4 divisors (see below), whose sum is σ = 91183400. Its totient is φ = 45591696.

The previous prime is 68387531. The next prime is 68387563. The reversal of 68387547 is 74578386.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (68387531) and next prime (68387563).

It is not a de Polignac number, because 68387547 - 2⁴ = 68387531 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 68387496 and 68387505.

It is not an unprimeable number, because it can be changed into a prime (68386547) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11397922 + ... + 11397927.

It is an arithmetic number, because the mean of its divisors is an integer number (22795850).

Almost surely, 2^68387547 is an apocalyptic number.

68387547 is a deficient number, since it is larger than the sum of its proper divisors (22795853).

68387547 is a wasteful number, since it uses less digits than its factorization.

68387547 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22795852.

The product of its digits is 1128960, while the sum is 48.

The square root of 68387547 is about 8269.6763540056. The cubic root of 68387547 is about 408.9394501900.

The spelling of 68387547 in words is "sixty-eight million, three hundred eighty-seven thousand, five hundred forty-seven".