68966138 has 8 divisors (see below), whose sum is σ = 103501920. Its totient is φ = 34465500.

The previous prime is 68966123. The next prime is 68966231. The reversal of 68966138 is 83166986.

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

It is a junction number, because it is equal to n+sod(n) for n = 68966092 and 68966101.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3158 + ... + 12161.

It is an arithmetic number, because the mean of its divisors is an integer number (12937740).

Almost surely, 2^68966138 is an apocalyptic number.

68966138 is a deficient number, since it is larger than the sum of its proper divisors (34535782).

68966138 is a wasteful number, since it uses less digits than its factorization.

68966138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17572.

The product of its digits is 373248, while the sum is 47.

The square root of 68966138 is about 8304.5853599081. The cubic root of 68966138 is about 410.0894867135.

The spelling of 68966138 in words is "sixty-eight million, nine hundred sixty-six thousand, one hundred thirty-eight".