68068551 has 8 divisors (see below), whose sum is σ = 90883840. Its totient is φ = 45316152.

The previous prime is 68068541. The next prime is 68068573. The reversal of 68068551 is 15586086.

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

It is not a de Polignac number, because 68068551 - 2¹¹ = 68066503 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 (68068501) 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, 13135 + ... + 17568.

It is an arithmetic number, because the mean of its divisors is an integer number (11360480).

Almost surely, 2^68068551 is an apocalyptic number.

68068551 is a deficient number, since it is larger than the sum of its proper divisors (22815289).

68068551 is a wasteful number, since it uses less digits than its factorization.

68068551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31445.

The product of its (nonzero) digits is 57600, while the sum is 39.

The square root of 68068551 is about 8250.3667191222. The cubic root of 68068551 is about 408.3026217450.

The spelling of 68068551 in words is "sixty-eight million, sixty-eight thousand, five hundred fifty-one".