730644462421 has 4 divisors (see below), whose sum is σ = 750391610092. Its totient is φ = 710897314752.

The previous prime is 730644462419. The next prime is 730644462497. The reversal of 730644462421 is 124264446037.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 591991748100 + 138652714321 = 769410^2 + 372361^2 .

It is a cyclic number.

It is not a de Polignac number, because 730644462421 - 2¹ = 730644462419 is a prime.

It is a super-3 number, since 3×730644462421³ (a number of 37 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (730644462521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9873573780 + ... + 9873573853.

It is an arithmetic number, because the mean of its divisors is an integer number (187597902523).

Almost surely, 2^730644462421 is an apocalyptic number.

It is an amenable number.

730644462421 is a deficient number, since it is larger than the sum of its proper divisors (19747147671).

730644462421 is a wasteful number, since it uses less digits than its factorization.

730644462421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19747147670.

The product of its (nonzero) digits is 774144, while the sum is 43.

The spelling of 730644462421 in words is "seven hundred thirty billion, six hundred forty-four million, four hundred sixty-two thousand, four hundred twenty-one".