722272651 has 2 divisors, whose sum is σ = 722272652. Its totient is φ = 722272650.

The previous prime is 722272613. The next prime is 722272673. The reversal of 722272651 is 156272227.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 722272651 - 2⁹ = 722272139 is a prime.

It is not a weakly prime, because it can be changed into another prime (722272051) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 361136325 + 361136326.

It is an arithmetic number, because the mean of its divisors is an integer number (361136326).

Almost surely, 2^722272651 is an apocalyptic number.

722272651 is a deficient number, since it is larger than the sum of its proper divisors (1).

722272651 is an equidigital number, since it uses as much as digits as its factorization.

722272651 is an evil number, because the sum of its binary digits is even.

The product of its digits is 23520, while the sum is 34.

The square root of 722272651 is about 26875.1307159612. The cubic root of 722272651 is about 897.2229837464. Note that the first 3 decimals are identical.

The spelling of 722272651 in words is "seven hundred twenty-two million, two hundred seventy-two thousand, six hundred fifty-one".