752710672921 has 3 divisors (see below), whose sum is σ = 752711540511. Its totient is φ = 752709805332.

The previous prime is 752710672897. The next prime is 752710672927. The reversal of 752710672921 is 129276017257.

The square root of 752710672921 is 867589.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in only one way, i.e., 539432960521 + 213277712400 = 734461^2 + 461820^2 .

It is a de Polignac number, because none of the positive numbers 2^k-752710672921 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (752710672927) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 433795 + ... + 1301383.

It is an arithmetic number, because the mean of its divisors is an integer number (250903846837).

Almost surely, 2^752710672921 is an apocalyptic number.

752710672921 is the 867589-th square number.

752710672921 is the 433795-th centered octagonal number.

It is an amenable number.

752710672921 is a deficient number, since it is larger than the sum of its proper divisors (867590).

752710672921 is an frugal number, since it uses more digits than its factorization.

752710672921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1735178 (or 867589 counting only the distinct ones).

The product of its (nonzero) digits is 740880, while the sum is 49.

Multiplying 752710672921 by its sum of digits (49), we get a square (36882822973129 = 6073123²).

The spelling of 752710672921 in words is "seven hundred fifty-two billion, seven hundred ten million, six hundred seventy-two thousand, nine hundred twenty-one".