68220682 has 8 divisors (see below), whose sum is σ = 103386276. Its totient is φ = 33758592.

The previous prime is 68220667. The next prime is 68220701. The reversal of 68220682 is 28602286.

It can be written as a sum of positive squares in 2 ways, for example, as 59582961 + 8637721 = 7719^2 + 2939^2 .

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

It is a super-2 number, since 2×68220682² = 9308122905090248, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 175633 + ... + 176020.

Almost surely, 2^68220682 is an apocalyptic number.

68220682 is a deficient number, since it is larger than the sum of its proper divisors (35165594).

68220682 is a wasteful number, since it uses less digits than its factorization.

68220682 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 351752.

The product of its (nonzero) digits is 18432, while the sum is 34.

The square root of 68220682 is about 8259.5812242510. The cubic root of 68220682 is about 408.6065764458.

The spelling of 68220682 in words is "sixty-eight million, two hundred twenty thousand, six hundred eighty-two".