8223770646 has 192 divisors, whose sum is σ = 24100876800. Its totient is φ = 2054590272.

The previous prime is 8223770629. The next prime is 8223770669. The reversal of 8223770646 is 6460773228.

It is a super-2 number, since 2×8223770646² (a number of 21 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 647271 + ... + 659853.

It is an arithmetic number, because the mean of its divisors is an integer number (125525400).

Almost surely, 2^8223770646 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8223770646, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12050438400).

8223770646 is an abundant number, since it is smaller than the sum of its proper divisors (15877106154).

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

8223770646 is a wasteful number, since it uses less digits than its factorization.

8223770646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12640 (or 12627 counting only the distinct ones).

The product of its (nonzero) digits is 677376, while the sum is 45.

The square root of 8223770646 is about 90685.0078348125. The cubic root of 8223770646 is about 2018.4763406380.

The spelling of 8223770646 in words is "eight billion, two hundred twenty-three million, seven hundred seventy thousand, six hundred forty-six".