68788387 has 4 divisors (see below), whose sum is σ = 68813136. Its totient is φ = 68763640.

The previous prime is 68788361. The next prime is 68788399. The reversal of 68788387 is 78388786.

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

It is a cyclic number.

It is not a de Polignac number, because 68788387 - 2¹⁹ = 68264099 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68788787) 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, 7588 + ... + 13969.

It is an arithmetic number, because the mean of its divisors is an integer number (17203284).

Almost surely, 2^68788387 is an apocalyptic number.

68788387 is a deficient number, since it is larger than the sum of its proper divisors (24749).

68788387 is a wasteful number, since it uses less digits than its factorization.

68788387 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24748.

The product of its digits is 3612672, while the sum is 55.

The square root of 68788387 is about 8293.8764760515. The cubic root of 68788387 is about 409.7368666549.

The spelling of 68788387 in words is "sixty-eight million, seven hundred eighty-eight thousand, three hundred eighty-seven".