730664 has 48 divisors (see below), whose sum is σ = 1645920. Its totient is φ = 300960.

The previous prime is 730663. The next prime is 730669. The reversal of 730664 is 466037.

It is not an unprimeable number, because it can be changed into a prime (730663) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 31757 + ... + 31779.

It is an arithmetic number, because the mean of its divisors is an integer number (34290).

2⁷³⁰⁶⁶⁴ 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 730664, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (822960).

730664 is an abundant number, since it is smaller than the sum of its proper divisors (915256).

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

730664 is a wasteful number, since it uses less digits than its factorization.

730664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78 (or 55 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 26.

The square root of 730664 is about 854.7888628194. The cubic root of 730664 is about 90.0684253306.

The spelling of 730664 in words is "seven hundred thirty thousand, six hundred sixty-four".