68356943 has 4 divisors (see below), whose sum is σ = 71329008. Its totient is φ = 65384880.

The previous prime is 68356931. The next prime is 68356991. The reversal of 68356943 is 34965386.

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

It is a cyclic number.

It is not a de Polignac number, because 68356943 - 2¹² = 68352847 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 68356894 and 68356903.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68356913) 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, 1485998 + ... + 1486043.

It is an arithmetic number, because the mean of its divisors is an integer number (17832252).

Almost surely, 2^68356943 is an apocalyptic number.

68356943 is a deficient number, since it is larger than the sum of its proper divisors (2972065).

68356943 is a wasteful number, since it uses less digits than its factorization.

68356943 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2972064.

The product of its digits is 466560, while the sum is 44.

The square root of 68356943 is about 8267.8257722330. The cubic root of 68356943 is about 408.8784398120.

The spelling of 68356943 in words is "sixty-eight million, three hundred fifty-six thousand, nine hundred forty-three".