673439536 has 180 divisors, whose sum is σ = 1729680960. Its totient is φ = 252806400.

The previous prime is 673439509. The next prime is 673439549. The reversal of 673439536 is 635934376.

Its product of digits (1224720) is a multiple of the sum of its prime divisors (280).

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 2940670 + ... + 2940898.

Almost surely, 2^673439536 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 673439536, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (864840480).

673439536 is an abundant number, since it is smaller than the sum of its proper divisors (1056241424).

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

673439536 is a wasteful number, since it uses less digits than its factorization.

673439536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 304 (or 280 counting only the distinct ones).

The product of its digits is 1224720, while the sum is 46.

The square root of 673439536 is about 25950.7135932714. The cubic root of 673439536 is about 876.5288259011.

The spelling of 673439536 in words is "six hundred seventy-three million, four hundred thirty-nine thousand, five hundred thirty-six".