3500666 has 12 divisors (see below), whose sum is σ = 5686542. Its totient is φ = 1615536.

The previous prime is 3500593. The next prime is 3500671. The reversal of 3500666 is 6660053.

It can be written as a sum of positive squares in 3 ways, for example, as 1755625 + 1745041 = 1325^2 + 1321^2 .

It is a Smith number, since the sum of its digits (26) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4841 + ... + 5516.

Almost surely, 2^3500666 is an apocalyptic number.

3500666 is a deficient number, since it is larger than the sum of its proper divisors (2185876).

3500666 is a wasteful number, since it uses less digits than its factorization.

3500666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10385 (or 10372 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 26.

The square root of 3500666 is about 1871.0066809074. The cubic root of 3500666 is about 151.8390783080.

The spelling of 3500666 in words is "three million, five hundred thousand, six hundred sixty-six".