3640219 has 8 divisors (see below), whose sum is σ = 3999600. Its totient is φ = 3285600.

The previous prime is 3640207. The next prime is 3640223. The reversal of 3640219 is 9120463.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 3640219 - 2¹¹ = 3638171 is a prime.

It is a super-2 number, since 2×3640219² = 26502388735922, which contains 22 as substring.

3640219 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 3640193 and 3640202.

It is not an unprimeable number, because it can be changed into a prime (3640249) 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, 529 + ... + 2749.

It is an arithmetic number, because the mean of its divisors is an integer number (499950).

Almost surely, 2^3640219 is an apocalyptic number.

3640219 is a deficient number, since it is larger than the sum of its proper divisors (359381).

3640219 is a wasteful number, since it uses less digits than its factorization.

3640219 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2381.

The product of its (nonzero) digits is 1296, while the sum is 25.

The square root of 3640219 is about 1907.9357955655. The cubic root of 3640219 is about 153.8305185585.

The spelling of 3640219 in words is "three million, six hundred forty thousand, two hundred nineteen".