754727321 has 2 divisors, whose sum is σ = 754727322. Its totient is φ = 754727320.

The previous prime is 754727317. The next prime is 754727341. The reversal of 754727321 is 123727457.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 748296025 + 6431296 = 27355^2 + 2536^2 .

It is a cyclic number.

It is not a de Polignac number, because 754727321 - 2² = 754727317 is a prime.

It is a super-2 number, since 2×754727321² = 1139226658127674082, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (754727341) 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 as a sum of consecutive naturals, namely, 377363660 + 377363661.

It is an arithmetic number, because the mean of its divisors is an integer number (377363661).

Almost surely, 2^754727321 is an apocalyptic number.

It is an amenable number.

754727321 is a deficient number, since it is larger than the sum of its proper divisors (1).

754727321 is an equidigital number, since it uses as much as digits as its factorization.

754727321 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 82320, while the sum is 38.

The square root of 754727321 is about 27472.3009775301. The cubic root of 754727321 is about 910.4652135663.

The spelling of 754727321 in words is "seven hundred fifty-four million, seven hundred twenty-seven thousand, three hundred twenty-one".