166260613 has 4 divisors (see below), whose sum is σ = 166374208. Its totient is φ = 166147020.

The previous prime is 166260599. The next prime is 166260631. The reversal of 166260613 is 316062661.

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, and also an emirpimes, since its reverse is a distinct semiprime: 316062661 = 1307 ⋅241823.

It is a cyclic number.

It is not a de Polignac number, because 166260613 - 2⁵ = 166260581 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 (166264613) 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, 54573 + ... + 57538.

It is an arithmetic number, because the mean of its divisors is an integer number (41593552).

Almost surely, 2^166260613 is an apocalyptic number.

It is an amenable number.

166260613 is a deficient number, since it is larger than the sum of its proper divisors (113595).

166260613 is a wasteful number, since it uses less digits than its factorization.

166260613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113594.

The product of its (nonzero) digits is 7776, while the sum is 31.

The square root of 166260613 is about 12894.2085061472. The cubic root of 166260613 is about 549.8739248213.

The spelling of 166260613 in words is "one hundred sixty-six million, two hundred sixty thousand, six hundred thirteen".