130601661 has 4 divisors (see below), whose sum is σ = 174135552. Its totient is φ = 87067772.

The previous prime is 130601657. The next prime is 130601663. The reversal of 130601661 is 166106031.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 130601661 - 2² = 130601657 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (130601663) 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, 21766941 + ... + 21766946.

It is an arithmetic number, because the mean of its divisors is an integer number (43533888).

Almost surely, 2^130601661 is an apocalyptic number.

It is an amenable number.

130601661 is a deficient number, since it is larger than the sum of its proper divisors (43533891).

130601661 is an equidigital number, since it uses as much as digits as its factorization.

130601661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43533890.

The product of its (nonzero) digits is 648, while the sum is 24.

The square root of 130601661 is about 11428.1083736548. The cubic root of 130601661 is about 507.3600102452.

Adding to 130601661 its reverse (166106031), we get a palindrome (296707692).

The spelling of 130601661 in words is "one hundred thirty million, six hundred one thousand, six hundred sixty-one".