4640166 has 20 divisors (see below), whose sum is σ = 10397772. Its totient is φ = 1546668.

The previous prime is 4640159. The next prime is 4640171. The reversal of 4640166 is 6610464.

4640166 is a `hidden beast` number, since 4 + 640 + 16 + 6 = 666.

It is a super-2 number, since 2×4640166² = 43062281015112, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a nialpdrome in base 9.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 14160 + ... + 14483.

Almost surely, 2^4640166 is an apocalyptic number.

4640166 is an abundant number, since it is smaller than the sum of its proper divisors (5757606).

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

4640166 is a wasteful number, since it uses less digits than its factorization.

4640166 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28657 (or 28648 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

The square root of 4640166 is about 2154.1044542919. The cubic root of 4640166 is about 166.7930073152.

The spelling of 4640166 in words is "four million, six hundred forty thousand, one hundred sixty-six".