1066640530 has 8 divisors (see below), whose sum is σ = 1919952972. Its totient is φ = 426656208.

The previous prime is 1066640501. The next prime is 1066640567. The reversal of 1066640530 is 350466601.

It can be written as a sum of positive squares in 2 ways, for example, as 984139641 + 82500889 = 31371^2 + 9083^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×1066640530² = 2275444040477361800, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1066640492 and 1066640501.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 53332017 + ... + 53332036.

Almost surely, 2^1066640530 is an apocalyptic number.

1066640530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1066640530 is a deficient number, since it is larger than the sum of its proper divisors (853312442).

1066640530 is a wasteful number, since it uses less digits than its factorization.

1066640530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106664060.

The product of its (nonzero) digits is 12960, while the sum is 31.

The square root of 1066640530 is about 32659.4631003022. The cubic root of 1066640530 is about 1021.7375644673.

The spelling of 1066640530 in words is "one billion, sixty-six million, six hundred forty thousand, five hundred thirty".