68026661 has 8 divisors (see below), whose sum is σ = 68935680. Its totient is φ = 67123728.

The previous prime is 68026657. The next prime is 68026697. The reversal of 68026661 is 16662086.

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 68026661 - 2² = 68026657 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68026961) 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, 23660 + ... + 26378.

It is an arithmetic number, because the mean of its divisors is an integer number (8616960).

Almost surely, 2^68026661 is an apocalyptic number.

It is an amenable number.

68026661 is a deficient number, since it is larger than the sum of its proper divisors (909019).

68026661 is a wasteful number, since it uses less digits than its factorization.

68026661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3043.

The product of its (nonzero) digits is 20736, while the sum is 35.

The square root of 68026661 is about 8247.8276533885. The cubic root of 68026661 is about 408.2188468524.

The spelling of 68026661 in words is "sixty-eight million, twenty-six thousand, six hundred sixty-one".