4040660 has 24 divisors (see below), whose sum is σ = 9138696. Its totient is φ = 1491840.

The previous prime is 4040653. The next prime is 4040669. The reversal of 4040660 is 660404.

It can be written as a sum of positive squares in 4 ways, for example, as 300304 + 3740356 = 548^2 + 1934^2 .

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4040669) 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, 7511 + ... + 8030.

It is an arithmetic number, because the mean of its divisors is an integer number (380779).

Almost surely, 2^4040660 is an apocalyptic number.

It is an amenable number.

4040660 is an abundant number, since it is smaller than the sum of its proper divisors (5098036).

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

4040660 is a wasteful number, since it uses less digits than its factorization.

4040660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15563 (or 15561 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 4040660 is about 2010.1392986557. The cubic root of 4040660 is about 159.2761573454.

The spelling of 4040660 in words is "four million, forty thousand, six hundred sixty".