722478727 has 2 divisors, whose sum is σ = 722478728. Its totient is φ = 722478726.

The previous prime is 722478719. The next prime is 722478751. The reversal of 722478727 is 727874227.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 722478727 - 2³ = 722478719 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (722478797) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 361239363 + 361239364.

It is an arithmetic number, because the mean of its divisors is an integer number (361239364).

Almost surely, 2^722478727 is an apocalyptic number.

722478727 is a deficient number, since it is larger than the sum of its proper divisors (1).

722478727 is an equidigital number, since it uses as much as digits as its factorization.

722478727 is an evil number, because the sum of its binary digits is even.

The product of its digits is 614656, while the sum is 46.

The square root of 722478727 is about 26878.9643959733. The cubic root of 722478727 is about 897.3083063466.

The spelling of 722478727 in words is "seven hundred twenty-two million, four hundred seventy-eight thousand, seven hundred twenty-seven".