166530077 has 6 divisors (see below), whose sum is σ = 193718718. Its totient is φ = 142740024.

The previous prime is 166530053. The next prime is 166530083. The reversal of 166530077 is 770035661.

166530077 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 104734756 + 61795321 = 10234^2 + 7861^2 .

It is not a de Polignac number, because 166530077 - 2¹² = 166525981 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 (166533077) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1699238 + ... + 1699335.

It is an arithmetic number, because the mean of its divisors is an integer number (32286453).

Almost surely, 2^166530077 is an apocalyptic number.

It is an amenable number.

166530077 is a deficient number, since it is larger than the sum of its proper divisors (27188641).

166530077 is an equidigital number, since it uses as much as digits as its factorization.

166530077 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3398587 (or 3398580 counting only the distinct ones).

The product of its (nonzero) digits is 26460, while the sum is 35.

The square root of 166530077 is about 12904.6533080126. The cubic root of 166530077 is about 550.1708306808.

The spelling of 166530077 in words is "one hundred sixty-six million, five hundred thirty thousand, seventy-seven".