722377919 has 2 divisors, whose sum is σ = 722377920. Its totient is φ = 722377918.

The previous prime is 722377897. The next prime is 722377937. The reversal of 722377919 is 919773227.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-722377919 is a prime.

It is a super-2 number, since 2×722377919² = 1043659715717541122, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (722377219) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 361188959 + 361188960.

It is an arithmetic number, because the mean of its divisors is an integer number (361188960).

Almost surely, 2^722377919 is an apocalyptic number.

722377919 is a deficient number, since it is larger than the sum of its proper divisors (1).

722377919 is an equidigital number, since it uses as much as digits as its factorization.

722377919 is an evil number, because the sum of its binary digits is even.

The product of its digits is 333396, while the sum is 47.

The square root of 722377919 is about 26877.0891094999. The cubic root of 722377919 is about 897.2665703711.

The spelling of 722377919 in words is "seven hundred twenty-two million, three hundred seventy-seven thousand, nine hundred nineteen".