724064993 has 2 divisors, whose sum is σ = 724064994. Its totient is φ = 724064992.

The previous prime is 724064983. The next prime is 724065007. The reversal of 724064993 is 399460427.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 662959504 + 61105489 = 25748^2 + 7817^2 .

It is a cyclic number.

It is not a de Polignac number, because 724064993 - 2¹⁴ = 724048609 is a prime.

It is a super-2 number, since 2×724064993² = 1048540228176180098, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (724064963) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 362032496 + 362032497.

It is an arithmetic number, because the mean of its divisors is an integer number (362032497).

Almost surely, 2^724064993 is an apocalyptic number.

It is an amenable number.

724064993 is a deficient number, since it is larger than the sum of its proper divisors (1).

724064993 is an equidigital number, since it uses as much as digits as its factorization.

724064993 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 326592, while the sum is 44.

The square root of 724064993 is about 26908.4557899557. The cubic root of 724064993 is about 897.9645329187.

The spelling of 724064993 in words is "seven hundred twenty-four million, sixty-four thousand, nine hundred ninety-three".