68666426 has 8 divisors (see below), whose sum is σ = 106322304. Its totient is φ = 33225660.

The previous prime is 68666359. The next prime is 68666441. The reversal of 68666426 is 62466686.

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

It is a super-2 number, since 2×68666426² = 9430156119226952, which contains 22 as substring.

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, 553700 + ... + 553823.

It is an arithmetic number, because the mean of its divisors is an integer number (13290288).

Almost surely, 2^68666426 is an apocalyptic number.

68666426 is a deficient number, since it is larger than the sum of its proper divisors (37655878).

68666426 is a wasteful number, since it uses less digits than its factorization.

68666426 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1107556.

The product of its digits is 497664, while the sum is 44.

The square root of 68666426 is about 8286.5207415417. The cubic root of 68666426 is about 409.4945705227.

The spelling of 68666426 in words is "sixty-eight million, six hundred sixty-six thousand, four hundred twenty-six".