68378623 has 4 divisors (see below), whose sum is σ = 68396328. Its totient is φ = 68360920.

The previous prime is 68378603. The next prime is 68378647. The reversal of 68378623 is 32687386.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-68378623 is a prime.

It is a super-2 number, since 2×68378623² = 9351272166752258, which contains 22 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 68378623.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68378603) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 313 + ... + 11698.

It is an arithmetic number, because the mean of its divisors is an integer number (17099082).

Almost surely, 2^68378623 is an apocalyptic number.

68378623 is a deficient number, since it is larger than the sum of its proper divisors (17705).

68378623 is a wasteful number, since it uses less digits than its factorization.

68378623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17704.

The product of its digits is 290304, while the sum is 43.

The square root of 68378623 is about 8269.1367747789. The cubic root of 68378623 is about 408.9216616960.

The spelling of 68378623 in words is "sixty-eight million, three hundred seventy-eight thousand, six hundred twenty-three".