3280666 has 4 divisors (see below), whose sum is σ = 4921002. Its totient is φ = 1640332.

The previous prime is 3280663. The next prime is 3280681. The reversal of 3280666 is 6660823.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 1890625 + 1390041 = 1375^2 + 1179^2 .

It is not an unprimeable number, because it can be changed into a prime (3280661) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 820165 + ... + 820168.

Almost surely, 2^3280666 is an apocalyptic number.

3280666 is a deficient number, since it is larger than the sum of its proper divisors (1640336).

3280666 is a wasteful number, since it uses less digits than its factorization.

3280666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1640335.

The product of its (nonzero) digits is 10368, while the sum is 31.

The square root of 3280666 is about 1811.2608867858. The cubic root of 3280666 is about 148.5892324219.

The spelling of 3280666 in words is "three million, two hundred eighty thousand, six hundred sixty-six".