166077556 has 48 divisors (see below), whose sum is σ = 326108160. Its totient is φ = 73543680.

The previous prime is 166077553. The next prime is 166077559. The reversal of 166077556 is 655770661.

It is an interprime number because it is at equal distance from previous prime (166077553) and next prime (166077559).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166077553) 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 15 ways as a sum of consecutive naturals, for example, 246436 + ... + 247108.

It is an arithmetic number, because the mean of its divisors is an integer number (6793920).

Almost surely, 2^166077556 is an apocalyptic number.

It is an amenable number.

166077556 is a deficient number, since it is larger than the sum of its proper divisors (160030604).

166077556 is a wasteful number, since it uses less digits than its factorization.

166077556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 904 (or 902 counting only the distinct ones).

The product of its (nonzero) digits is 264600, while the sum is 43.

The square root of 166077556 is about 12887.1081317726. The cubic root of 166077556 is about 549.6720424988.

The spelling of 166077556 in words is "one hundred sixty-six million, seventy-seven thousand, five hundred fifty-six".