727731764 has 12 divisors (see below), whose sum is σ = 1297559844. Its totient is φ = 357000384.

The previous prime is 727731757. The next prime is 727731779. The reversal of 727731764 is 467137727.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 345216400 + 382515364 = 18580^2 + 19558^2 .

It is a hoax number, since the sum of its digits (44) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 1716137 + ... + 1716560.

It is an arithmetic number, because the mean of its divisors is an integer number (108129987).

Almost surely, 2^727731764 is an apocalyptic number.

It is an amenable number.

727731764 is a deficient number, since it is larger than the sum of its proper divisors (569828080).

727731764 is a wasteful number, since it uses less digits than its factorization.

727731764 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3432754 (or 3432752 counting only the distinct ones).

The product of its digits is 345744, while the sum is 44.

The square root of 727731764 is about 26976.5039247120. The cubic root of 727731764 is about 899.4777892351.

The spelling of 727731764 in words is "seven hundred twenty-seven million, seven hundred thirty-one thousand, seven hundred sixty-four".