1164100661 has 8 divisors (see below), whose sum is σ = 1170424920. Its totient is φ = 1157787648.

The previous prime is 1164100657. The next prime is 1164100681. The reversal of 1164100661 is 1660014611.

It can be written as a sum of positive squares in 4 ways, for example, as 624700036 + 539400625 = 24994^2 + 23225^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 1164100661 - 2² = 1164100657 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1164100661.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1164100631) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 276605 + ... + 280781.

It is an arithmetic number, because the mean of its divisors is an integer number (146303115).

Almost surely, 2^1164100661 is an apocalyptic number.

It is an amenable number.

1164100661 is a deficient number, since it is larger than the sum of its proper divisors (6324259).

1164100661 is a wasteful number, since it uses less digits than its factorization.

1164100661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5623.

The product of its (nonzero) digits is 864, while the sum is 26.

The square root of 1164100661 is about 34118.9193996527. The cubic root of 1164100661 is about 1051.9542323841.

The spelling of 1164100661 in words is "one billion, one hundred sixty-four million, one hundred thousand, six hundred sixty-one".