673736736 has 96 divisors (see below), whose sum is σ = 1799521920. Its totient is φ = 220688384.

The previous prime is 673736717. The next prime is 673736759. The reversal of 673736736 is 637637376.

It is a tau number, because it is divible by the number of its divisors (96).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1876525 + ... + 1876883.

It is an arithmetic number, because the mean of its divisors is an integer number (18745020).

Almost surely, 2^673736736 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 673736736, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (899760960).

673736736 is an abundant number, since it is smaller than the sum of its proper divisors (1125785184).

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

673736736 is a wasteful number, since it uses less digits than its factorization.

673736736 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 658 (or 650 counting only the distinct ones).

The product of its digits is 2000376, while the sum is 48.

The square root of 673736736 is about 25956.4392010923. The cubic root of 673736736 is about 876.6577491579.

The spelling of 673736736 in words is "six hundred seventy-three million, seven hundred thirty-six thousand, seven hundred thirty-six".