6625764 has 54 divisors (see below), whose sum is σ = 17416854. Its totient is φ = 2122560.

The previous prime is 6625747. The next prime is 6625769. The reversal of 6625764 is 4675266.

It can be written as a sum of positive squares in only one way, i.e., 4040100 + 2585664 = 2010^2 + 1608^2 .

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6625769) 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 17 ways as a sum of consecutive naturals, for example, 98859 + ... + 98925.

Almost surely, 2^6625764 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6625764, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8708427).

6625764 is an abundant number, since it is smaller than the sum of its proper divisors (10791090).

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

6625764 is a wasteful number, since it uses less digits than its factorization.

6625764 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 185 (or 113 counting only the distinct ones).

The product of its digits is 60480, while the sum is 36.

The square root of 6625764 is about 2574.0559434480. The cubic root of 6625764 is about 187.8215070620.

The spelling of 6625764 in words is "six million, six hundred twenty-five thousand, seven hundred sixty-four".