68978113 has 8 divisors (see below), whose sum is σ = 74380320. Its totient is φ = 63753120.

The previous prime is 68978089. The next prime is 68978141. The reversal of 68978113 is 31187986.

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

It is a cyclic number.

It is not a de Polignac number, because 68978113 - 2¹³ = 68969921 is a prime.

It is a super-4 number, since 4×68978113⁴ (a number of 32 digits) contains 4444 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 68978113.

It is not an unprimeable number, because it can be changed into a prime (68978213) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 43495 + ... + 45052.

It is an arithmetic number, because the mean of its divisors is an integer number (9297540).

Almost surely, 2^68978113 is an apocalyptic number.

It is an amenable number.

68978113 is a deficient number, since it is larger than the sum of its proper divisors (5402207).

68978113 is a wasteful number, since it uses less digits than its factorization.

68978113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88607.

The product of its digits is 72576, while the sum is 43.

The square root of 68978113 is about 8305.3063158441. The cubic root of 68978113 is about 410.1132207639.

The spelling of 68978113 in words is "sixty-eight million, nine hundred seventy-eight thousand, one hundred thirteen".