675549449784 has 864 divisors, whose sum is σ = 2240802673200. Its totient is φ = 190437350400.

The previous prime is 675549449741. The next prime is 675549449797. The reversal of 675549449784 is 487944945576.

675549449784 is a `hidden beast` number, since 6 + 7 + 5 + 54 + 9 + 4 + 497 + 84 = 666.

It is a Harshad number since it is a multiple of its sum of digits (72).

Its product of digits (1219276800) is a multiple of the sum of its prime divisors (189).

It is a congruent number.

It is an unprimeable number.

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 215 ways as a sum of consecutive naturals, for example, 7590443212 + ... + 7590443300.

Almost surely, 2^675549449784 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 675549449784, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1120401336600).

675549449784 is an abundant number, since it is smaller than the sum of its proper divisors (1565253223416).

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

675549449784 is a wasteful number, since it uses less digits than its factorization.

675549449784 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 239 (or 189 counting only the distinct ones).

The product of its digits is 1219276800, while the sum is 72.

The spelling of 675549449784 in words is "six hundred seventy-five billion, five hundred forty-nine million, four hundred forty-nine thousand, seven hundred eighty-four".