673203564 has 216 divisors, whose sum is σ = 2016902160. Its totient is φ = 187488000.

The previous prime is 673203563. The next prime is 673203577. The reversal of 673203564 is 465302376.

673203564 is a `hidden beast` number, since 6 + 73 + 20 + 3 + 564 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (673203563) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 11036094 + ... + 11036154.

It is an arithmetic number, because the mean of its divisors is an integer number (9337510).

Almost surely, 2^673203564 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 673203564, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1008451080).

673203564 is an abundant number, since it is smaller than the sum of its proper divisors (1343698596).

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

673203564 is a wasteful number, since it uses less digits than its factorization.

673203564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 173 (or 137 counting only the distinct ones).

The product of its (nonzero) digits is 90720, while the sum is 36.

The square root of 673203564 is about 25946.1666532843. The cubic root of 673203564 is about 876.4264359006.

The spelling of 673203564 in words is "six hundred seventy-three million, two hundred three thousand, five hundred sixty-four".