6625913 has 8 divisors (see below), whose sum is σ = 7748928. Its totient is φ = 5547024.

The previous prime is 6625907. The next prime is 6625921. The reversal of 6625913 is 3195266.

It is a happy number.

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

It is not a de Polignac number, because 6625913 - 2¹⁸ = 6363769 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 6625913.

It is not an unprimeable number, because it can be changed into a prime (6625943) 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, 10706 + ... + 11307.

It is an arithmetic number, because the mean of its divisors is an integer number (968616).

Almost surely, 2^6625913 is an apocalyptic number.

It is an amenable number.

6625913 is a deficient number, since it is larger than the sum of its proper divisors (1123015).

6625913 is a wasteful number, since it uses less digits than its factorization.

6625913 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22063.

The product of its digits is 9720, while the sum is 32.

The square root of 6625913 is about 2574.0848859352. The cubic root of 6625913 is about 187.8229149598.

The spelling of 6625913 in words is "six million, six hundred twenty-five thousand, nine hundred thirteen".