724847993 has 2 divisors, whose sum is σ = 724847994. Its totient is φ = 724847992.

The previous prime is 724847987. The next prime is 724848037. The reversal of 724847993 is 399748427.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 724847929 + 64 = 26923^2 + 8^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-724847993 is a prime.

It is a super-2 number, since 2×724847993² = 1050809225912256098, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (724847593) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 362423996 + 362423997.

It is an arithmetic number, because the mean of its divisors is an integer number (362423997).

Almost surely, 2^724847993 is an apocalyptic number.

It is an amenable number.

724847993 is a deficient number, since it is larger than the sum of its proper divisors (1).

724847993 is an equidigital number, since it uses as much as digits as its factorization.

724847993 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3048192, while the sum is 53.

The square root of 724847993 is about 26923.0011885748. The cubic root of 724847993 is about 898.2881009883.

The spelling of 724847993 in words is "seven hundred twenty-four million, eight hundred forty-seven thousand, nine hundred ninety-three".