68039247 has 16 divisors (see below), whose sum is σ = 96114560. Its totient is φ = 42692832.

The previous prime is 68039243. The next prime is 68039261. The reversal of 68039247 is 74293086.

It is not a de Polignac number, because 68039247 - 2² = 68039243 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68039243) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5148 + ... + 12750.

It is an arithmetic number, because the mean of its divisors is an integer number (6007160).

Almost surely, 2^68039247 is an apocalyptic number.

68039247 is a deficient number, since it is larger than the sum of its proper divisors (28075313).

68039247 is a wasteful number, since it uses less digits than its factorization.

68039247 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7782.

The product of its (nonzero) digits is 72576, while the sum is 39.

The square root of 68039247 is about 8248.5906068855. The cubic root of 68039247 is about 408.2440209313.

It can be divided in two parts, 68039 and 247, that added together give a palindrome (68286).

The spelling of 68039247 in words is "sixty-eight million, thirty-nine thousand, two hundred forty-seven".