6250644 has 18 divisors (see below), whose sum is σ = 15800330. Its totient is φ = 2083536.

The previous prime is 6250633. The next prime is 6250649. The reversal of 6250644 is 4460526.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 5904900 + 345744 = 2430^2 + 588^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6250649) 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 5 ways as a sum of consecutive naturals, for example, 86779 + ... + 86850.

Almost surely, 2^6250644 is an apocalyptic number.

It is an amenable number.

6250644 is an abundant number, since it is smaller than the sum of its proper divisors (9549686).

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

6250644 is a wasteful number, since it uses less digits than its factorization.

6250644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 173639 (or 173634 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 27.

The square root of 6250644 is about 2500.1287966823. The cubic root of 6250644 is about 184.2079014248.

The spelling of 6250644 in words is "six million, two hundred fifty thousand, six hundred forty-four".