722534387 has 2 divisors, whose sum is σ = 722534388. Its totient is φ = 722534386.

The previous prime is 722534383. The next prime is 722534401. The reversal of 722534387 is 783435227.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 722534387 - 2² = 722534383 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (722534383) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 361267193 + 361267194.

It is an arithmetic number, because the mean of its divisors is an integer number (361267194).

Almost surely, 2^722534387 is an apocalyptic number.

722534387 is a deficient number, since it is larger than the sum of its proper divisors (1).

722534387 is an equidigital number, since it uses as much as digits as its factorization.

722534387 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 282240, while the sum is 41.

The square root of 722534387 is about 26879.9997581845. Note that the first 3 decimals coincide. The cubic root of 722534387 is about 897.3313487310.

The spelling of 722534387 in words is "seven hundred twenty-two million, five hundred thirty-four thousand, three hundred eighty-seven".