722462381 has 2 divisors, whose sum is σ = 722462382. Its totient is φ = 722462380.

The previous prime is 722462339. The next prime is 722462383. The reversal of 722462381 is 183264227.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 640849225 + 81613156 = 25315^2 + 9034^2 .

It is a cyclic number.

It is not a de Polignac number, because 722462381 - 2⁶ = 722462317 is a prime.

It is a super-2 number, since 2×722462381² = 1043903783920378322, which contains 22 as substring.

Together with 722462383, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (722462383) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 361231190 + 361231191.

It is an arithmetic number, because the mean of its divisors is an integer number (361231191).

Almost surely, 2^722462381 is an apocalyptic number.

It is an amenable number.

722462381 is a deficient number, since it is larger than the sum of its proper divisors (1).

722462381 is an equidigital number, since it uses as much as digits as its factorization.

722462381 is an evil number, because the sum of its binary digits is even.

The product of its digits is 32256, while the sum is 35.

The square root of 722462381 is about 26878.6603274791. The cubic root of 722462381 is about 897.3015391290.

The spelling of 722462381 in words is "seven hundred twenty-two million, four hundred sixty-two thousand, three hundred eighty-one".