1066770077 has 4 divisors (see below), whose sum is σ = 1129521276. Its totient is φ = 1004018880.

The previous prime is 1066770049. The next prime is 1066770113. The reversal of 1066770077 is 7700776601.

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

It can be written as a sum of positive squares in 2 ways, for example, as 807753241 + 259016836 = 28421^2 + 16094^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1066770077 is a prime.

It is a super-2 number, since 2×1066770077² = 2275996794365171858, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1066770007) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31375574 + ... + 31375607.

It is an arithmetic number, because the mean of its divisors is an integer number (282380319).

Almost surely, 2^1066770077 is an apocalyptic number.

1066770077 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

1066770077 is a deficient number, since it is larger than the sum of its proper divisors (62751199).

1066770077 is an equidigital number, since it uses as much as digits as its factorization.

1066770077 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62751198.

The product of its (nonzero) digits is 86436, while the sum is 41.

The square root of 1066770077 is about 32661.4463396831. The cubic root of 1066770077 is about 1021.7789272552.

The spelling of 1066770077 in words is "one billion, sixty-six million, seven hundred seventy thousand, seventy-seven".