3640930 has 16 divisors (see below), whose sum is σ = 6575544. Its totient is φ = 1451520.

The previous prime is 3640909. The next prime is 3640933. The reversal of 3640930 is 390463.

It can be written as a sum of positive squares in 4 ways, for example, as 2468041 + 1172889 = 1571^2 + 1083^2 .

It is a junction number, because it is equal to n+sod(n) for n = 3640895 and 3640904.

It is not an unprimeable number, because it can be changed into a prime (3640933) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5074 + ... + 5746.

Almost surely, 2^3640930 is an apocalyptic number.

3640930 is a deficient number, since it is larger than the sum of its proper divisors (2934614).

3640930 is a wasteful number, since it uses less digits than its factorization.

3640930 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1221.

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

The square root of 3640930 is about 1908.1221134927. The cubic root of 3640930 is about 153.8405331921.

The spelling of 3640930 in words is "three million, six hundred forty thousand, nine hundred thirty".