724219361 has 2 divisors, whose sum is σ = 724219362. Its totient is φ = 724219360.

The previous prime is 724219343. The next prime is 724219369. The reversal of 724219361 is 163912427.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 456078736 + 268140625 = 21356^2 + 16375^2 .

It is a cyclic number.

It is not a de Polignac number, because 724219361 - 2⁶ = 724219297 is a prime.

It is not a weakly prime, because it can be changed into another prime (724219369) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 362109680 + 362109681.

It is an arithmetic number, because the mean of its divisors is an integer number (362109681).

Almost surely, 2^724219361 is an apocalyptic number.

It is an amenable number.

724219361 is a deficient number, since it is larger than the sum of its proper divisors (1).

724219361 is an equidigital number, since it uses as much as digits as its factorization.

724219361 is an evil number, because the sum of its binary digits is even.

The product of its digits is 18144, while the sum is 35.

The square root of 724219361 is about 26911.3240291146. The cubic root of 724219361 is about 898.0283426322.

The spelling of 724219361 in words is "seven hundred twenty-four million, two hundred nineteen thousand, three hundred sixty-one".