3309640 has 32 divisors (see below), whose sum is σ = 7532280. Its totient is φ = 1308672.

The previous prime is 3309637. The next prime is 3309659. The reversal of 3309640 is 469033.

It can be written as a sum of positive squares in 4 ways, for example, as 1737124 + 1572516 = 1318^2 + 1254^2 .

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, 3454 + ... + 4306.

Almost surely, 2^3309640 is an apocalyptic number.

It is an amenable number.

3309640 is an abundant number, since it is smaller than the sum of its proper divisors (4222640).

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

3309640 is a wasteful number, since it uses less digits than its factorization.

3309640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 961 (or 957 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 25.

The square root of 3309640 is about 1819.2416002280. The cubic root of 3309640 is about 149.0253849217.

The spelling of 3309640 in words is "three million, three hundred nine thousand, six hundred forty".