68655017 has 4 divisors (see below), whose sum is σ = 70510596. Its totient is φ = 66799440.

The previous prime is 68655011. The next prime is 68655031. The reversal of 68655017 is 71055686.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 50922496 + 17732521 = 7136^2 + 4211^2 .

It is a cyclic number.

It is not a de Polignac number, because 68655017 - 2⁶ = 68654953 is a prime.

It is a super-2 number, since 2×68655017² = 9427022718540578, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68655011) 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, 927734 + ... + 927807.

It is an arithmetic number, because the mean of its divisors is an integer number (17627649).

Almost surely, 2^68655017 is an apocalyptic number.

It is an amenable number.

68655017 is a deficient number, since it is larger than the sum of its proper divisors (1855579).

68655017 is a wasteful number, since it uses less digits than its factorization.

68655017 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1855578.

The product of its (nonzero) digits is 50400, while the sum is 38.

The square root of 68655017 is about 8285.8323058097. The cubic root of 68655017 is about 409.4718899465.

The spelling of 68655017 in words is "sixty-eight million, six hundred fifty-five thousand, seventeen".