166770061 has 4 divisors (see below), whose sum is σ = 166830300. Its totient is φ = 166709824.

The previous prime is 166770059. The next prime is 166770067. The reversal of 166770061 is 160077661.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 160077661 = 17 ⋅9416333.

It can be written as a sum of positive squares in 2 ways, for example, as 68641225 + 98128836 = 8285^2 + 9906^2 .

It is a cyclic number.

It is not a de Polignac number, because 166770061 - 2¹ = 166770059 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 166769999 and 166770026.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166770067) 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, 25756 + ... + 31573.

It is an arithmetic number, because the mean of its divisors is an integer number (41707575).

Almost surely, 2^166770061 is an apocalyptic number.

It is an amenable number.

166770061 is a deficient number, since it is larger than the sum of its proper divisors (60239).

166770061 is an equidigital number, since it uses as much as digits as its factorization.

166770061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60238.

The product of its (nonzero) digits is 10584, while the sum is 34.

The square root of 166770061 is about 12913.9483118061. The cubic root of 166770061 is about 550.4349848135.

The spelling of 166770061 in words is "one hundred sixty-six million, seven hundred seventy thousand, sixty-one".