4156660 has 12 divisors (see below), whose sum is σ = 8729028. Its totient is φ = 1662656.

The previous prime is 4156651. The next prime is 4156673. The reversal of 4156660 is 666514.

It can be written as a sum of positive squares in 2 ways, for example, as 1954404 + 2202256 = 1398^2 + 1484^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 103897 + ... + 103936.

It is an arithmetic number, because the mean of its divisors is an integer number (727419).

Almost surely, 2^4156660 is an apocalyptic number.

It is an amenable number.

4156660 is an abundant number, since it is smaller than the sum of its proper divisors (4572368).

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

4156660 is a wasteful number, since it uses less digits than its factorization.

4156660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 207842 (or 207840 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 28.

The square root of 4156660 is about 2038.7888561595. The cubic root of 4156660 is about 160.7859764343.

It can be divided in two parts, 4 and 156660, that multiplied together give a triangular number (626640 = T₁₁₁₉).

The spelling of 4156660 in words is "four million, one hundred fifty-six thousand, six hundred sixty".