68388975 has 48 divisors (see below), whose sum is σ = 127491840. Its totient is φ = 35935200.

The previous prime is 68388941. The next prime is 68388979. The reversal of 68388975 is 57988386.

It is a happy number.

It is not a de Polignac number, because 68388975 - 2¹² = 68384879 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68388979) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 47212 + ... + 48638.

It is an arithmetic number, because the mean of its divisors is an integer number (2656080).

Almost surely, 2^68388975 is an apocalyptic number.

68388975 is a deficient number, since it is larger than the sum of its proper divisors (59102865).

68388975 is a wasteful number, since it uses less digits than its factorization.

68388975 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1517 (or 1506 counting only the distinct ones).

The product of its digits is 2903040, while the sum is 54.

The square root of 68388975 is about 8269.7626930886. The cubic root of 68388975 is about 408.9422965243.

The spelling of 68388975 in words is "sixty-eight million, three hundred eighty-eight thousand, nine hundred seventy-five".