68137347 has 8 divisors (see below), whose sum is σ = 91247440. Its totient is φ = 45226080.

The previous prime is 68137331. The next prime is 68137369. The reversal of 68137347 is 74373186.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 68137347 - 2⁴ = 68137331 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68137847) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 48904 + ... + 50277.

It is an arithmetic number, because the mean of its divisors is an integer number (11405930).

Almost surely, 2^68137347 is an apocalyptic number.

68137347 is a deficient number, since it is larger than the sum of its proper divisors (23110093).

68137347 is a wasteful number, since it uses less digits than its factorization.

68137347 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99413.

The product of its digits is 84672, while the sum is 39.

The square root of 68137347 is about 8254.5349354158. The cubic root of 68137347 is about 408.4401308139.

The spelling of 68137347 in words is "sixty-eight million, one hundred thirty-seven thousand, three hundred forty-seven".