6644025630 has 48 divisors (see below), whose sum is σ = 18844875504. Its totient is φ = 1610672640.

The previous prime is 6644025613. The next prime is 6644025637. The reversal of 6644025630 is 365204466.

6644025630 is a `hidden beast` number, since 6 + 644 + 0 + 2 + 5 + 6 + 3 + 0 = 666.

It is a super-4 number, since 4×6644025630⁴ (a number of 40 digits) contains 4444 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6644025637) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3354579 + ... + 3356558.

It is an arithmetic number, because the mean of its divisors is an integer number (392601573).

Almost surely, 2^6644025630 is an apocalyptic number.

6644025630 is an abundant number, since it is smaller than the sum of its proper divisors (12200849874).

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

6644025630 is a wasteful number, since it uses less digits than its factorization.

6644025630 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6711161 (or 6711158 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 36.

The square root of 6644025630 is about 81510.8927076621. The cubic root of 6644025630 is about 1879.9390381243.

The spelling of 6644025630 in words is "six billion, six hundred forty-four million, twenty-five thousand, six hundred thirty".