4431660 has 48 divisors (see below), whose sum is σ = 12501216. Its totient is φ = 1172992.

The previous prime is 4431659. The next prime is 4431671. The reversal of 4431660 is 661344.

It is a super-2 number, since 2×4431660² = 39279220711200, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 4431660.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13822 + ... + 14138.

It is an arithmetic number, because the mean of its divisors is an integer number (260442).

Almost surely, 2^4431660 is an apocalyptic number.

It is an amenable number.

4431660 is an abundant number, since it is smaller than the sum of its proper divisors (8069556).

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

4431660 is a wasteful number, since it uses less digits than its factorization.

4431660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 562 (or 560 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 24.

The square root of 4431660 is about 2105.1508259505. The cubic root of 4431660 is about 164.2563411344.

The spelling of 4431660 in words is "four million, four hundred thirty-one thousand, six hundred sixty".