3640473 has 6 divisors (see below), whose sum is σ = 5258474. Its totient is φ = 2426976.

The previous prime is 3640471. The next prime is 3640487. The reversal of 3640473 is 3740463.

It can be written as a sum of positive squares in only one way, i.e., 3640464 + 9 = 1908^2 + 3^2 .

It is not a de Polignac number, because 3640473 - 2¹ = 3640471 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3640471) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 202240 + ... + 202257.

Almost surely, 2^3640473 is an apocalyptic number.

It is an amenable number.

3640473 is a deficient number, since it is larger than the sum of its proper divisors (1618001).

3640473 is a wasteful number, since it uses less digits than its factorization.

3640473 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 404503 (or 404500 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 27.

The square root of 3640473 is about 1908.0023584891. The cubic root of 3640473 is about 153.8340963691.

The spelling of 3640473 in words is "three million, six hundred forty thousand, four hundred seventy-three".