730621768 has 32 divisors (see below), whose sum is σ = 1411977600. Its totient is φ = 354238272.

The previous prime is 730621757. The next prime is 730621769. The reversal of 730621768 is 867126037.

It is a self number, because there is not a number n which added to its sum of digits gives 730621768.

It is not an unprimeable number, because it can be changed into a prime (730621769) 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, 32071 + ... + 49897.

It is an arithmetic number, because the mean of its divisors is an integer number (44124300).

Almost surely, 2^730621768 is an apocalyptic number.

It is an amenable number.

730621768 is a deficient number, since it is larger than the sum of its proper divisors (681355832).

730621768 is a wasteful number, since it uses less digits than its factorization.

730621768 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17989 (or 17985 counting only the distinct ones).

The product of its (nonzero) digits is 84672, while the sum is 40.

The square root of 730621768 is about 27030.0160562290. The cubic root of 730621768 is about 900.6668999438. Note that the first 3 decimals are identical.

The spelling of 730621768 in words is "seven hundred thirty million, six hundred twenty-one thousand, seven hundred sixty-eight".