3640619 has 4 divisors (see below), whose sum is σ = 3651120. Its totient is φ = 3630120.

The previous prime is 3640597. The next prime is 3640633. The reversal of 3640619 is 9160463.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 3640619 - 2²⁰ = 2592043 is a prime.

It is a super-2 number, since 2×3640619² = 26508213406322, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3640591 and 3640600.

It is not an unprimeable number, because it can be changed into a prime (3640649) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4712 + ... + 5429.

It is an arithmetic number, because the mean of its divisors is an integer number (912780).

Almost surely, 2^3640619 is an apocalyptic number.

3640619 is a deficient number, since it is larger than the sum of its proper divisors (10501).

3640619 is a wasteful number, since it uses less digits than its factorization.

3640619 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10500.

The product of its (nonzero) digits is 3888, while the sum is 29.

The square root of 3640619 is about 1908.0406180163. The cubic root of 3640619 is about 153.8361528307.

The spelling of 3640619 in words is "three million, six hundred forty thousand, six hundred nineteen".