6220649 has 4 divisors (see below), whose sum is σ = 6491136. Its totient is φ = 5950164.

The previous prime is 6220639. The next prime is 6220651. The reversal of 6220649 is 9460226.

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 6220649 - 2⁴ = 6220633 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6220639) 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, 135209 + ... + 135254.

It is an arithmetic number, because the mean of its divisors is an integer number (1622784).

Almost surely, 2^6220649 is an apocalyptic number.

It is an amenable number.

6220649 is a deficient number, since it is larger than the sum of its proper divisors (270487).

6220649 is a wasteful number, since it uses less digits than its factorization.

6220649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 270486.

The product of its (nonzero) digits is 5184, while the sum is 29.

The square root of 6220649 is about 2494.1228919201. The cubic root of 6220649 is about 183.9127756873.

The spelling of 6220649 in words is "six million, two hundred twenty thousand, six hundred forty-nine".