68817722 has 4 divisors (see below), whose sum is σ = 103226586. Its totient is φ = 34408860.

The previous prime is 68817713. The next prime is 68817731. The reversal of 68817722 is 22771886.

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

It is an interprime number because it is at equal distance from previous prime (68817713) and next prime (68817731).

It can be written as a sum of positive squares in only one way, i.e., 58507201 + 10310521 = 7649^2 + 3211^2 .

It is a super-2 number, since 2×68817722² = 9471757722538568, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 68817722.

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 as a sum of consecutive naturals, namely, 17204429 + ... + 17204432.

Almost surely, 2^68817722 is an apocalyptic number.

68817722 is a deficient number, since it is larger than the sum of its proper divisors (34408864).

68817722 is a wasteful number, since it uses less digits than its factorization.

68817722 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34408863.

The product of its digits is 75264, while the sum is 41.

The square root of 68817722 is about 8295.6447609574. The cubic root of 68817722 is about 409.7951028549.

The spelling of 68817722 in words is "sixty-eight million, eight hundred seventeen thousand, seven hundred twenty-two".