6623965 has 8 divisors (see below), whose sum is σ = 8416440. Its totient is φ = 4987392.

The previous prime is 6623963. The next prime is 6624017. The reversal of 6623965 is 5693266.

It can be written as a sum of positive squares in 4 ways, for example, as 2679769 + 3944196 = 1637^2 + 1986^2 .

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

It is not a de Polignac number, because 6623965 - 2¹ = 6623963 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6623963) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 38880 + ... + 39049.

It is an arithmetic number, because the mean of its divisors is an integer number (1052055).

Almost surely, 2^6623965 is an apocalyptic number.

It is an amenable number.

6623965 is a deficient number, since it is larger than the sum of its proper divisors (1792475).

6623965 is a wasteful number, since it uses less digits than its factorization.

6623965 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77951.

The product of its digits is 58320, while the sum is 37.

The square root of 6623965 is about 2573.7064712201. The cubic root of 6623965 is about 187.8045066841.

The spelling of 6623965 in words is "six million, six hundred twenty-three thousand, nine hundred sixty-five".