662778227356 has 12 divisors (see below), whose sum is σ = 1325556454768. Its totient is φ = 284047811712.

The previous prime is 662778227351. The next prime is 662778227359. The reversal of 662778227356 is 653722877266.

It is a happy number.

662778227356 is an admirable number.

It is a hoax number, since the sum of its digits (61) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 662778227294 and 662778227303.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (662778227351) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11835325461 + ... + 11835325516.

Almost surely, 2^662778227356 is an apocalyptic number.

It is an amenable number.

662778227356 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

662778227356 is a wasteful number, since it uses less digits than its factorization.

662778227356 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23670650988 (or 23670650986 counting only the distinct ones).

The product of its digits is 71124480, while the sum is 61.

The spelling of 662778227356 in words is "six hundred sixty-two billion, seven hundred seventy-eight million, two hundred twenty-seven thousand, three hundred fifty-six".