68220946 has 4 divisors (see below), whose sum is σ = 102331422. Its totient is φ = 34110472.

The previous prime is 68220871. The next prime is 68221009. The reversal of 68220946 is 64902286.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 64902286 = 2 ⋅32451143.

It can be written as a sum of positive squares in only one way, i.e., 61011721 + 7209225 = 7811^2 + 2685^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17055235 + ... + 17055238.

Almost surely, 2^68220946 is an apocalyptic number.

68220946 is a deficient number, since it is larger than the sum of its proper divisors (34110476).

68220946 is a wasteful number, since it uses less digits than its factorization.

68220946 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34110475.

The product of its (nonzero) digits is 41472, while the sum is 37.

The square root of 68220946 is about 8259.5972056753. The cubic root of 68220946 is about 408.6071035195.

The spelling of 68220946 in words is "sixty-eight million, two hundred twenty thousand, nine hundred forty-six".