6625944 has 48 divisors (see below), whose sum is σ = 19328400. Its totient is φ = 2038464.

The previous prime is 6625943. The next prime is 6625979. The reversal of 6625944 is 4495266.

6625944 is a `hidden beast` number, since 6 + 62 + 594 + 4 = 666.

It is a super-2 number, since 2×6625944² = 87806267782272, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 6625899 and 6625908.

It is a congruent number.

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 11 ways as a sum of consecutive naturals, for example, 2604 + ... + 4475.

It is an arithmetic number, because the mean of its divisors is an integer number (402675).

Almost surely, 2^6625944 is an apocalyptic number.

It is an amenable number.

6625944 is an abundant number, since it is smaller than the sum of its proper divisors (12702456).

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

6625944 is a wasteful number, since it uses less digits than its factorization.

6625944 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7104 (or 7097 counting only the distinct ones).

The product of its digits is 51840, while the sum is 36.

The square root of 6625944 is about 2574.0909074856. The cubic root of 6625944 is about 187.8232078754.

It can be divided in two parts, 6625 and 944, that added together give a square (7569 = 87²).

The spelling of 6625944 in words is "six million, six hundred twenty-five thousand, nine hundred forty-four".