1066065650 has 48 divisors (see below), whose sum is σ = 2139462024. Its totient is φ = 392878080.

The previous prime is 1066065629. The next prime is 1066065659. The reversal of 1066065650 is 565606601.

It can be written as a sum of positive squares in 12 ways, for example, as 59336209 + 1006729441 = 7703^2 + 31729^2 .

It is a super-2 number, since 2×1066065650² = 2272991940219845000, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1066065650.

It is not an unprimeable number, because it can be changed into a prime (1066065659) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 436232 + ... + 438668.

Almost surely, 2^1066065650 is an apocalyptic number.

1066065650 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1066065650 is an abundant number, since it is smaller than the sum of its proper divisors (1073396374).

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

1066065650 is a wasteful number, since it uses less digits than its factorization.

1066065650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3135 (or 3130 counting only the distinct ones).

The product of its (nonzero) digits is 32400, while the sum is 35.

The square root of 1066065650 is about 32650.6607896379. The cubic root of 1066065650 is about 1021.5539718289.

The spelling of 1066065650 in words is "one billion, sixty-six million, sixty-five thousand, six hundred fifty".