1066421445 has 8 divisors (see below), whose sum is σ = 1706274336. Its totient is φ = 568758096.

The previous prime is 1066421431. The next prime is 1066421467. The reversal of 1066421445 is 5441246601.

1066421445 = T₆₈₆₂ + T₆₈₆₃ + ... + T₆₉₀₆.

1066421445 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 1066421445 - 2⁴ = 1066421429 is a prime.

It is a super-2 number, since 2×1066421445² = 2274509396711776050, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35547367 + ... + 35547396.

It is an arithmetic number, because the mean of its divisors is an integer number (213284292).

Almost surely, 2^1066421445 is an apocalyptic number.

1066421445 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1066421445 is a deficient number, since it is larger than the sum of its proper divisors (639852891).

1066421445 is an equidigital number, since it uses as much as digits as its factorization.

1066421445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71094771.

The product of its (nonzero) digits is 23040, while the sum is 33.

The square root of 1066421445 is about 32656.1088465849. The cubic root of 1066421445 is about 1021.6676056588.

The spelling of 1066421445 in words is "one billion, sixty-six million, four hundred twenty-one thousand, four hundred forty-five".