1026766117 has 4 divisors (see below), whose sum is σ = 1105748140. Its totient is φ = 947784096.

The previous prime is 1026766087. The next prime is 1026766127. The reversal of 1026766117 is 7116676201.

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 79727041 + 947039076 = 8929^2 + 30774^2 .

It is a cyclic number.

It is not a de Polignac number, because 1026766117 - 2¹⁵ = 1026733349 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1026766127) 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, 39490992 + ... + 39491017.

It is an arithmetic number, because the mean of its divisors is an integer number (276437035).

Almost surely, 2^1026766117 is an apocalyptic number.

It is an amenable number.

1026766117 is a deficient number, since it is larger than the sum of its proper divisors (78982023).

1026766117 is an equidigital number, since it uses as much as digits as its factorization.

1026766117 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78982022.

The product of its (nonzero) digits is 21168, while the sum is 37.

The square root of 1026766117 is about 32043.1914296938. The cubic root of 1026766117 is about 1008.8435992027.

The spelling of 1026766117 in words is "one billion, twenty-six million, seven hundred sixty-six thousand, one hundred seventeen".