1170661001 has 4 divisors (see below), whose sum is σ = 1174887492. Its totient is φ = 1166434512.

The previous prime is 1170660989. The next prime is 1170661013. The reversal of 1170661001 is 1001660711.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1001660711 = 239 ⋅4191049.

It is an interprime number because it is at equal distance from previous prime (1170660989) and next prime (1170661013).

It can be written as a sum of positive squares in 2 ways, for example, as 180929401 + 989731600 = 13451^2 + 31460^2 .

It is a cyclic number.

It is not a de Polignac number, because 1170661001 - 2⁶ = 1170660937 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1170661901) 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, 2112830 + ... + 2113383.

It is an arithmetic number, because the mean of its divisors is an integer number (293721873).

Almost surely, 2^1170661001 is an apocalyptic number.

It is an amenable number.

1170661001 is a deficient number, since it is larger than the sum of its proper divisors (4226491).

1170661001 is an equidigital number, since it uses as much as digits as its factorization.

1170661001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4226490.

The product of its (nonzero) digits is 252, while the sum is 23.

The square root of 1170661001 is about 34214.9236591286. The cubic root of 1170661001 is about 1053.9266431140.

The spelling of 1170661001 in words is "one billion, one hundred seventy million, six hundred sixty-one thousand, one".