1066655026 has 4 divisors (see below), whose sum is σ = 1599982542. Its totient is φ = 533327512.

The previous prime is 1066654997. The next prime is 1066655059. The reversal of 1066655026 is 6205566601.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 976500001 + 90155025 = 31249^2 + 9495^2 .

It is a super-2 number, since 2×1066655026² = 2275505888982121352, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 266663755 + ... + 266663758.

Almost surely, 2^1066655026 is an apocalyptic number.

1066655026 is a deficient number, since it is larger than the sum of its proper divisors (533327516).

1066655026 is an equidigital number, since it uses as much as digits as its factorization.

1066655026 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 533327515.

The product of its (nonzero) digits is 64800, while the sum is 37.

The square root of 1066655026 is about 32659.6850260378. The cubic root of 1066655026 is about 1021.7421930309.

The spelling of 1066655026 in words is "one billion, sixty-six million, six hundred fifty-five thousand, twenty-six".