68117249 has 16 divisors (see below), whose sum is σ = 73846080. Its totient is φ = 62599680.

The previous prime is 68117239. The next prime is 68117267. The reversal of 68117249 is 94271186.

It is a cyclic number.

It is not a de Polignac number, because 68117249 - 2⁴ = 68117233 is a prime.

It is a super-2 number, since 2×68117249² = 9279919222656002, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68117209) 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, 162362 + ... + 162780.

It is an arithmetic number, because the mean of its divisors is an integer number (4615380).

Almost surely, 2^68117249 is an apocalyptic number.

It is an amenable number.

68117249 is a deficient number, since it is larger than the sum of its proper divisors (5728831).

68117249 is a wasteful number, since it uses less digits than its factorization.

68117249 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 640.

The product of its digits is 24192, while the sum is 38.

The square root of 68117249 is about 8253.3174542120. The cubic root of 68117249 is about 408.3999686153.

The spelling of 68117249 in words is "sixty-eight million, one hundred seventeen thousand, two hundred forty-nine".