1066644325 has 48 divisors (see below), whose sum is σ = 1443568320. Its totient is φ = 779051520.

The previous prime is 1066644323. The next prime is 1066644407. The reversal of 1066644325 is 5234466601.

It is not a de Polignac number, because 1066644325 - 2¹ = 1066644323 is a prime.

It is a super-3 number, since 3×1066644325³ (a number of 28 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1066644323) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2407554 + ... + 2407996.

It is an arithmetic number, because the mean of its divisors is an integer number (30074340).

Almost surely, 2^1066644325 is an apocalyptic number.

It is an amenable number.

1066644325 is a deficient number, since it is larger than the sum of its proper divisors (376923995).

1066644325 is a wasteful number, since it uses less digits than its factorization.

1066644325 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 646 (or 641 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 37.

The square root of 1066644325 is about 32659.5211997972. The cubic root of 1066644325 is about 1021.7387762125.

The spelling of 1066644325 in words is "one billion, sixty-six million, six hundred forty-four thousand, three hundred twenty-five".