3500660 has 24 divisors (see below), whose sum is σ = 7428456. Its totient is φ = 1385600.

The previous prime is 3500593. The next prime is 3500671. The reversal of 3500660 is 660053.

It can be written as a sum of positive squares in 4 ways, for example, as 1073296 + 2427364 = 1036^2 + 1558^2 .

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1154 + ... + 2886.

It is an arithmetic number, because the mean of its divisors is an integer number (309519).

Almost surely, 2^3500660 is an apocalyptic number.

It is an amenable number.

3500660 is an abundant number, since it is smaller than the sum of its proper divisors (3927796).

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

3500660 is a wasteful number, since it uses less digits than its factorization.

3500660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1843 (or 1841 counting only the distinct ones).

The product of its (nonzero) digits is 540, while the sum is 20.

The square root of 3500660 is about 1871.0050774918. The cubic root of 3500660 is about 151.8389915593.

The spelling of 3500660 in words is "three million, five hundred thousand, six hundred sixty".