673664550 has 96 divisors (see below), whose sum is σ = 1848027552. Its totient is φ = 161326080.

The previous prime is 673664533. The next prime is 673664573. The reversal of 673664550 is 55466376.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 67482 + ... + 76818.

It is an arithmetic number, because the mean of its divisors is an integer number (19250287).

Almost surely, 2^673664550 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 673664550, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (924013776).

673664550 is an abundant number, since it is smaller than the sum of its proper divisors (1174363002).

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

673664550 is a wasteful number, since it uses less digits than its factorization.

673664550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9402 (or 9397 counting only the distinct ones).

The product of its (nonzero) digits is 453600, while the sum is 42.

The square root of 673664550 is about 25955.0486418346. The cubic root of 673664550 is about 876.6264388685.

The spelling of 673664550 in words is "six hundred seventy-three million, six hundred sixty-four thousand, five hundred fifty".