766728373 has 8 divisors (see below), whose sum is σ = 812103192. Its totient is φ = 721383936.

The previous prime is 766728367. The next prime is 766728377. The reversal of 766728373 is 373827667.

It can be written as a sum of positive squares in 4 ways, for example, as 77035729 + 689692644 = 8777^2 + 26262^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 766728373 - 2⁵ = 766728341 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (766728377) 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 7 ways as a sum of consecutive naturals, for example, 63411 + ... + 74527.

It is an arithmetic number, because the mean of its divisors is an integer number (101512899).

Almost surely, 2^766728373 is an apocalyptic number.

It is an amenable number.

766728373 is a deficient number, since it is larger than the sum of its proper divisors (45374819).

766728373 is a wasteful number, since it uses less digits than its factorization.

766728373 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15191.

The product of its digits is 1778112, while the sum is 49.

The square root of 766728373 is about 27689.8604727434. The cubic root of 766728373 is about 915.2656809586.

The spelling of 766728373 in words is "seven hundred sixty-six million, seven hundred twenty-eight thousand, three hundred seventy-three".