748896721 has 16 divisors (see below), whose sum is σ = 796207104. Its totient is φ = 702901584.

The previous prime is 748896703. The next prime is 748896737. The reversal of 748896721 is 127698847.

It is a cyclic number.

It is not a de Polignac number, because 748896721 - 2⁹ = 748896209 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (748896821) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 472296 + ... + 473878.

It is an arithmetic number, because the mean of its divisors is an integer number (49762944).

Almost surely, 2^748896721 is an apocalyptic number.

It is an amenable number.

748896721 is a deficient number, since it is larger than the sum of its proper divisors (47310383).

748896721 is a wasteful number, since it uses less digits than its factorization.

748896721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1980.

The product of its digits is 1354752, while the sum is 52.

The square root of 748896721 is about 27365.9774354946. The cubic root of 748896721 is about 908.1145686746.

The spelling of 748896721 in words is "seven hundred forty-eight million, eight hundred ninety-six thousand, seven hundred twenty-one".