156654666 has 72 divisors (see below), whose sum is σ = 403341120. Its totient is φ = 43794576.

The previous prime is 156654653. The next prime is 156654671. The reversal of 156654666 is 666456651.

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 35 ways as a sum of consecutive naturals, for example, 39565 + ... + 43343.

It is an arithmetic number, because the mean of its divisors is an integer number (5601960).

Almost surely, 2^156654666 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 156654666, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (201670560).

156654666 is an abundant number, since it is smaller than the sum of its proper divisors (246686454).

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

156654666 is a wasteful number, since it uses less digits than its factorization.

156654666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3848 (or 3838 counting only the distinct ones).

The product of its digits is 777600, while the sum is 45.

The square root of 156654666 is about 12516.1761732568. The cubic root of 156654666 is about 539.0732457946.

The spelling of 156654666 in words is "one hundred fifty-six million, six hundred fifty-four thousand, six hundred sixty-six".