722423623 has 2 divisors, whose sum is σ = 722423624. Its totient is φ = 722423622.

The previous prime is 722423587. The next prime is 722423633. The reversal of 722423623 is 326324227.

It is a strong prime.

It is an emirp because it is prime and its reverse (326324227) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 722423623 - 2¹³ = 722415431 is a prime.

It is a super-2 number, since 2×722423623² = 1043791782136892258, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (722423633) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 361211811 + 361211812.

It is an arithmetic number, because the mean of its divisors is an integer number (361211812).

Almost surely, 2^722423623 is an apocalyptic number.

722423623 is a deficient number, since it is larger than the sum of its proper divisors (1).

722423623 is an equidigital number, since it uses as much as digits as its factorization.

722423623 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 24192, while the sum is 31.

The square root of 722423623 is about 26877.9393369358. The cubic root of 722423623 is about 897.2854929717.

The spelling of 722423623 in words is "seven hundred twenty-two million, four hundred twenty-three thousand, six hundred twenty-three".