1065556500 has 48 divisors (see below), whose sum is σ = 3102904896. Its totient is φ = 284148000.

The previous prime is 1065556493. The next prime is 1065556507. The reversal of 1065556500 is 56555601.

It is an interprime number because it is at equal distance from previous prime (1065556493) and next prime (1065556507).

It is a super-2 number, since 2×1065556500² = 2270821309384500000, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1065556507) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 353686 + ... + 356685.

It is an arithmetic number, because the mean of its divisors is an integer number (64643852).

Almost surely, 2^1065556500 is an apocalyptic number.

1065556500 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1065556500 is an abundant number, since it is smaller than the sum of its proper divisors (2037348396).

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

1065556500 is a wasteful number, since it uses less digits than its factorization.

1065556500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 710393 (or 710381 counting only the distinct ones).

The product of its (nonzero) digits is 22500, while the sum is 33.

The square root of 1065556500 is about 32642.8629259138. The cubic root of 1065556500 is about 1021.3913154828.

The spelling of 1065556500 in words is "one billion, sixty-five million, five hundred fifty-six thousand, five hundred".