1066020755 has 4 divisors (see below), whose sum is σ = 1279224912. Its totient is φ = 852816600.

The previous prime is 1066020749. The next prime is 1066020779. The reversal of 1066020755 is 5570206601.

It is a happy number.

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

It is not a de Polignac number, because 1066020755 - 2⁸ = 1066020499 is a prime.

It is a super-2 number, since 2×1066020755² = 2272800500181540050, which contains 22 as substring.

It is a Duffinian number.

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, 106602071 + ... + 106602080.

It is an arithmetic number, because the mean of its divisors is an integer number (319806228).

Almost surely, 2^1066020755 is an apocalyptic number.

1066020755 is a deficient number, since it is larger than the sum of its proper divisors (213204157).

1066020755 is an equidigital number, since it uses as much as digits as its factorization.

1066020755 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 213204156.

The product of its (nonzero) digits is 12600, while the sum is 32.

The square root of 1066020755 is about 32649.9732771713. The cubic root of 1066020755 is about 1021.5396314646.

The spelling of 1066020755 in words is "one billion, sixty-six million, twenty thousand, seven hundred fifty-five".