1065664600 has 192 divisors, whose sum is σ = 3327287040. Its totient is φ = 306547200.

The previous prime is 1065664541. The next prime is 1065664619. The reversal of 1065664600 is 64665601.

It is a super-2 number, since 2×1065664600² = 2271282079386320000, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 197539 + ... + 202861.

It is an arithmetic number, because the mean of its divisors is an integer number (17329620).

Almost surely, 2^1065664600 is an apocalyptic number.

1065664600 is a gapful number since it is divisible by the number (10) 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 1065664600, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1663643520).

1065664600 is an abundant number, since it is smaller than the sum of its proper divisors (2261622440).

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

1065664600 is a wasteful number, since it uses less digits than its factorization.

1065664600 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5370 (or 5361 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 34.

The square root of 1065664600 is about 32644.5186823148. The cubic root of 1065664600 is about 1021.4258541386.

The spelling of 1065664600 in words is "one billion, sixty-five million, six hundred sixty-four thousand, six hundred".