68158226 has 4 divisors (see below), whose sum is σ = 102237342. Its totient is φ = 34079112.

The previous prime is 68158217. The next prime is 68158241. The reversal of 68158226 is 62285186.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 62285186 = 2 ⋅31142593.

It can be written as a sum of positive squares in only one way, i.e., 68046001 + 112225 = 8249^2 + 335^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 68158226.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17039555 + ... + 17039558.

Almost surely, 2^68158226 is an apocalyptic number.

68158226 is a deficient number, since it is larger than the sum of its proper divisors (34079116).

68158226 is a wasteful number, since it uses less digits than its factorization.

68158226 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34079115.

The product of its digits is 46080, while the sum is 38.

The square root of 68158226 is about 8255.7995372950. The cubic root of 68158226 is about 408.4818453360.

The spelling of 68158226 in words is "sixty-eight million, one hundred fifty-eight thousand, two hundred twenty-six".