68693438 has 16 divisors (see below), whose sum is σ = 113949936. Its totient is φ = 30795840.

The previous prime is 68693437. The next prime is 68693441. The reversal of 68693438 is 83439686.

It is a junction number, because it is equal to n+sod(n) for n = 68693392 and 68693401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68693437) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19781 + ... + 22992.

It is an arithmetic number, because the mean of its divisors is an integer number (7121871).

Almost surely, 2^68693438 is an apocalyptic number.

68693438 is a deficient number, since it is larger than the sum of its proper divisors (45256498).

68693438 is a wasteful number, since it uses less digits than its factorization.

68693438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42859.

The product of its digits is 746496, while the sum is 47.

The square root of 68693438 is about 8288.1504571285. The cubic root of 68693438 is about 409.5482591440.

The spelling of 68693438 in words is "sixty-eight million, six hundred ninety-three thousand, four hundred thirty-eight".