730443561 has 16 divisors (see below), whose sum is σ = 1009416000. Its totient is φ = 469280448.

The previous prime is 730443533. The next prime is 730443569. The reversal of 730443561 is 165344037.

It is not a de Polignac number, because 730443561 - 2²² = 726249257 is a prime.

It is not an unprimeable number, because it can be changed into a prime (730443569) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 39915 + ... + 55263.

It is an arithmetic number, because the mean of its divisors is an integer number (63088500).

Almost surely, 2^730443561 is an apocalyptic number.

It is an amenable number.

730443561 is a deficient number, since it is larger than the sum of its proper divisors (278972439).

730443561 is a wasteful number, since it uses less digits than its factorization.

730443561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15928.

The product of its (nonzero) digits is 30240, while the sum is 33.

The square root of 730443561 is about 27026.7193902627. The cubic root of 730443561 is about 900.5936663389.

Adding to 730443561 its reverse (165344037), we get a palindrome (895787598).

The spelling of 730443561 in words is "seven hundred thirty million, four hundred forty-three thousand, five hundred sixty-one".