730648 has 8 divisors (see below), whose sum is σ = 1369980. Its totient is φ = 365320.

The previous prime is 730637. The next prime is 730663. The reversal of 730648 is 846037.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

730648 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45658 + ... + 45673.

2⁷³⁰⁶⁴⁸ is an apocalyptic number.

It is an amenable number.

730648 is a deficient number, since it is larger than the sum of its proper divisors (639332).

730648 is a wasteful number, since it uses less digits than its factorization.

730648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91337 (or 91333 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 28.

The square root of 730648 is about 854.7795037318. The cubic root of 730648 is about 90.0677678896.

It can be divided in two parts, 730 and 648, that added together give a triangular number (1378 = T₅₂).

The spelling of 730648 in words is "seven hundred thirty thousand, six hundred forty-eight".