4166646 has 16 divisors (see below), whose sum is σ = 9091008. Its totient is φ = 1262600.

The previous prime is 4166641. The next prime is 4166647. The reversal of 4166646 is 6466614.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4166641) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31500 + ... + 31631.

It is an arithmetic number, because the mean of its divisors is an integer number (568188).

Almost surely, 2^4166646 is an apocalyptic number.

4166646 is an abundant number, since it is smaller than the sum of its proper divisors (4924362).

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

4166646 is a wasteful number, since it uses less digits than its factorization.

4166646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63147.

The product of its digits is 20736, while the sum is 33.

The square root of 4166646 is about 2041.2363900342. The cubic root of 4166646 is about 160.9146313879.

Subtracting 4166646 from its reverse (6466614), we obtain a cube (2299968 = 132³).

The spelling of 4166646 in words is "four million, one hundred sixty-six thousand, six hundred forty-six".