68226690 has 32 divisors (see below), whose sum is σ = 187136640. Its totient is φ = 15594624.

The previous prime is 68226679. The next prime is 68226709. The reversal of 68226690 is 9662286.

It is a super-2 number, since 2×68226690² = 9309762456712200, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 162235 + ... + 162654.

It is an arithmetic number, because the mean of its divisors is an integer number (5848020).

Almost surely, 2^68226690 is an apocalyptic number.

68226690 is an abundant number, since it is smaller than the sum of its proper divisors (118909950).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

68226690 is a wasteful number, since it uses less digits than its factorization.

68226690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 324906.

The product of its (nonzero) digits is 62208, while the sum is 39.

The square root of 68226690 is about 8259.9449150706. The cubic root of 68226690 is about 408.6185710305.

It can be divided in two parts, 682 and 26690, that added together give a palindrome (27372).

The spelling of 68226690 in words is "sixty-eight million, two hundred twenty-six thousand, six hundred ninety".