730685641 has 32 divisors (see below), whose sum is σ = 919941120. Its totient is φ = 566352000.

The previous prime is 730685629. The next prime is 730685651. The reversal of 730685641 is 146586037.

It is a happy number.

It is not a de Polignac number, because 730685641 - 2⁹ = 730685129 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 730685594 and 730685603.

It is not an unprimeable number, because it can be changed into a prime (730685651) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 254866 + ... + 257716.

It is an arithmetic number, because the mean of its divisors is an integer number (28748160).

Almost surely, 2^730685641 is an apocalyptic number.

It is an amenable number.

730685641 is a deficient number, since it is larger than the sum of its proper divisors (189255479).

730685641 is a wasteful number, since it uses less digits than its factorization.

730685641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2965.

The product of its (nonzero) digits is 120960, while the sum is 40.

The square root of 730685641 is about 27031.1975502381. The cubic root of 730685641 is about 900.6931454528.

The spelling of 730685641 in words is "seven hundred thirty million, six hundred eighty-five thousand, six hundred forty-one".