730400066281 has 8 divisors (see below), whose sum is σ = 732193474824. Its totient is φ = 728608619520.

The previous prime is 730400066219. The next prime is 730400066303. The reversal of 730400066281 is 182660004037.

730400066281 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 42066010000 + 688334056281 = 205100^2 + 829659^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-730400066281 is a prime.

It is a super-2 number, since 2×730400066281² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 730400066281.

It is not an unprimeable number, because it can be changed into a prime (730400066381) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 256491 + ... + 1235551.

It is an arithmetic number, because the mean of its divisors is an integer number (91524184353).

Almost surely, 2^730400066281 is an apocalyptic number.

It is an amenable number.

730400066281 is a deficient number, since it is larger than the sum of its proper divisors (1793408543).

730400066281 is a wasteful number, since it uses less digits than its factorization.

730400066281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 980891.

The product of its (nonzero) digits is 48384, while the sum is 37.

The spelling of 730400066281 in words is "seven hundred thirty billion, four hundred million, sixty-six thousand, two hundred eighty-one".