3066640 has 20 divisors (see below), whose sum is σ = 7130124. Its totient is φ = 1226624.

The previous prime is 3066617. The next prime is 3066641. The reversal of 3066640 is 466603.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1597696 + 1468944 = 1264^2 + 1212^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3066641) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19087 + ... + 19246.

Almost surely, 2^3066640 is an apocalyptic number.

It is an amenable number.

3066640 is an abundant number, since it is smaller than the sum of its proper divisors (4063484).

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

3066640 is a wasteful number, since it uses less digits than its factorization.

3066640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38346 (or 38340 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 25.

The square root of 3066640 is about 1751.1824576554. The cubic root of 3066640 is about 145.2850516237.

The spelling of 3066640 in words is "three million, sixty-six thousand, six hundred forty".