6649320 has 32 divisors (see below), whose sum is σ = 19948320. Its totient is φ = 1773120.

The previous prime is 6649319. The next prime is 6649333. The reversal of 6649320 is 239466.

It is a Smith number, since the sum of its digits (30) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 27586 + ... + 27825.

It is an arithmetic number, because the mean of its divisors is an integer number (623385).

Almost surely, 2^6649320 is an apocalyptic number.

6649320 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

6649320 is an abundant number, since it is smaller than the sum of its proper divisors (13299000).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6649320 is a wasteful number, since it uses less digits than its factorization.

6649320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55425 (or 55421 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 30.

The square root of 6649320 is about 2578.6275419300. The cubic root of 6649320 is about 188.0438256060.

The spelling of 6649320 in words is "six million, six hundred forty-nine thousand, three hundred twenty".