722398451 has 2 divisors, whose sum is σ = 722398452. Its totient is φ = 722398450.

The previous prime is 722398447. The next prime is 722398463. The reversal of 722398451 is 154893227.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 722398451 - 2² = 722398447 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 722398399 and 722398408.

It is not a weakly prime, because it can be changed into another prime (722398351) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 361199225 + 361199226.

It is an arithmetic number, because the mean of its divisors is an integer number (361199226).

Almost surely, 2^722398451 is an apocalyptic number.

722398451 is a deficient number, since it is larger than the sum of its proper divisors (1).

722398451 is an equidigital number, since it uses as much as digits as its factorization.

722398451 is an evil number, because the sum of its binary digits is even.

The product of its digits is 120960, while the sum is 41.

The square root of 722398451 is about 26877.4710677921. The cubic root of 722398451 is about 897.2750712321.

The spelling of 722398451 in words is "seven hundred twenty-two million, three hundred ninety-eight thousand, four hundred fifty-one".