68418722 has 4 divisors (see below), whose sum is σ = 102628086. Its totient is φ = 34209360.

The previous prime is 68418703. The next prime is 68418773. The reversal of 68418722 is 22781486.

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

It can be written as a sum of positive squares in only one way, i.e., 67551961 + 866761 = 8219^2 + 931^2 .

It is a super-2 number, since 2×68418722² = 9362243040226568, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17104679 + ... + 17104682.

Almost surely, 2^68418722 is an apocalyptic number.

68418722 is a deficient number, since it is larger than the sum of its proper divisors (34209364).

68418722 is a wasteful number, since it uses less digits than its factorization.

68418722 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34209363.

The product of its digits is 43008, while the sum is 38.

The square root of 68418722 is about 8271.5610376760. The cubic root of 68418722 is about 409.0015801694.

The spelling of 68418722 in words is "sixty-eight million, four hundred eighteen thousand, seven hundred twenty-two".