156665676 has 48 divisors (see below), whose sum is σ = 390168576. Its totient is φ = 48754944.

The previous prime is 156665669. The next prime is 156665701. The reversal of 156665676 is 676566651.

It is a happy number.

156665676 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

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, 22885 + ... + 28931.

It is an arithmetic number, because the mean of its divisors is an integer number (8128512).

Almost surely, 2^156665676 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 156665676, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (195084288).

156665676 is an abundant number, since it is smaller than the sum of its proper divisors (233502900).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

156665676 is a wasteful number, since it uses less digits than its factorization.

156665676 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6198 (or 6196 counting only the distinct ones).

The product of its digits is 1360800, while the sum is 48.

The square root of 156665676 is about 12516.6159963466. The cubic root of 156665676 is about 539.0858745437.

The spelling of 156665676 in words is "one hundred fifty-six million, six hundred sixty-five thousand, six hundred seventy-six".