68075738 has 4 divisors (see below), whose sum is σ = 102113610. Its totient is φ = 34037868.

The previous prime is 68075737. The next prime is 68075741. The reversal of 68075738 is 83757086.

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

It can be written as a sum of positive squares in only one way, i.e., 44582329 + 23493409 = 6677^2 + 4847^2 .

It is a super-2 number, since 2×68075738² = 9268612208489288, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (68075737) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17018933 + ... + 17018936.

Almost surely, 2^68075738 is an apocalyptic number.

68075738 is a deficient number, since it is larger than the sum of its proper divisors (34037872).

68075738 is a wasteful number, since it uses less digits than its factorization.

68075738 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34037871.

The product of its (nonzero) digits is 282240, while the sum is 44.

The square root of 68075738 is about 8250.8022640226. The cubic root of 68075738 is about 408.3169914141.

The spelling of 68075738 in words is "sixty-eight million, seventy-five thousand, seven hundred thirty-eight".