4066740 has 96 divisors (see below), whose sum is σ = 13426560. Its totient is φ = 1018368.

The previous prime is 4066729. The next prime is 4066747. The reversal of 4066740 is 476604.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4066747) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8959 + ... + 9401.

It is an arithmetic number, because the mean of its divisors is an integer number (139860).

Almost surely, 2^4066740 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4066740, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6713280).

4066740 is an abundant number, since it is smaller than the sum of its proper divisors (9359820).

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

4066740 is a wasteful number, since it uses less digits than its factorization.

4066740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 478 (or 470 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 27.

The square root of 4066740 is about 2016.6159773244. The cubic root of 4066740 is about 159.6180995924.

The spelling of 4066740 in words is "four million, sixty-six thousand, seven hundred forty".