6654739 has 24 divisors (see below), whose sum is σ = 8631168. Its totient is φ = 5080320.

The previous prime is 6654737. The next prime is 6654743. The reversal of 6654739 is 9374566.

It is not a de Polignac number, because 6654739 - 2¹ = 6654737 is a prime.

6654739 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (6654737) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 19579 + ... + 19915.

It is an arithmetic number, because the mean of its divisors is an integer number (359632).

Almost surely, 2^6654739 is an apocalyptic number.

6654739 is a deficient number, since it is larger than the sum of its proper divisors (1976429).

6654739 is a wasteful number, since it uses less digits than its factorization.

6654739 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 395 (or 388 counting only the distinct ones).

The product of its digits is 136080, while the sum is 40.

The square root of 6654739 is about 2579.6780806915. The cubic root of 6654739 is about 188.0948951286.

The spelling of 6654739 in words is "six million, six hundred fifty-four thousand, seven hundred thirty-nine".