5818649 has 4 divisors (see below), whose sum is σ = 5836560. Its totient is φ = 5800740.

The previous prime is 5818643. The next prime is 5818651. The reversal of 5818649 is 9468185.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 5818649 - 2⁴ = 5818633 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5818643) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8459 + ... + 9120.

It is an arithmetic number, because the mean of its divisors is an integer number (1459140).

Almost surely, 2^5818649 is an apocalyptic number.

It is an amenable number.

5818649 is a deficient number, since it is larger than the sum of its proper divisors (17911).

5818649 is a wasteful number, since it uses less digits than its factorization.

5818649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17910.

The product of its digits is 69120, while the sum is 41.

The square root of 5818649 is about 2412.1875963532. The cubic root of 5818649 is about 179.8625390846.

The spelling of 5818649 in words is "five million, eight hundred eighteen thousand, six hundred forty-nine".