6626739 has 8 divisors (see below), whose sum is σ = 10097920. Its totient is φ = 3786696.

The previous prime is 6626729. The next prime is 6626743. The reversal of 6626739 is 9376266.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 6626739 - 2⁴ = 6626723 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 6626697 and 6626706.

It is not an unprimeable number, because it can be changed into a prime (6626729) 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 7 ways as a sum of consecutive naturals, for example, 157759 + ... + 157800.

It is an arithmetic number, because the mean of its divisors is an integer number (1262240).

Almost surely, 2^6626739 is an apocalyptic number.

6626739 is a deficient number, since it is larger than the sum of its proper divisors (3471181).

6626739 is a wasteful number, since it uses less digits than its factorization.

6626739 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 315569.

The product of its digits is 81648, while the sum is 39.

The square root of 6626739 is about 2574.2453263044. The cubic root of 6626739 is about 187.8307194330.

The spelling of 6626739 in words is "six million, six hundred twenty-six thousand, seven hundred thirty-nine".