1071622656 has 320 divisors, whose sum is σ = 3506025600. Its totient is φ = 321159168.

The previous prime is 1071622649. The next prime is 1071622679. The reversal of 1071622656 is 6562261701.

It is a happy number.

It is a super-2 number, since 2×1071622656² = 2296750233704988672, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 1071622656.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 12040660 + ... + 12040748.

It is an arithmetic number, because the mean of its divisors is an integer number (10956330).

Almost surely, 2^1071622656 is an apocalyptic number.

1071622656 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1071622656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1753012800).

1071622656 is an abundant number, since it is smaller than the sum of its proper divisors (2434402944).

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

1071622656 is an equidigital number, since it uses as much as digits as its factorization.

1071622656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 196 (or 174 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 36.

The square root of 1071622656 is about 32735.6480919502. The cubic root of 1071622656 is about 1023.3258909603.

The spelling of 1071622656 in words is "one billion, seventy-one million, six hundred twenty-two thousand, six hundred fifty-six".