722971 has 2 divisors, whose sum is σ = 722972. Its totient is φ = 722970.

The previous prime is 722963. The next prime is 722977. The reversal of 722971 is 179227.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 722971 - 2³ = 722963 is a prime.

It is a nialpdrome in base 15.

It is not a weakly prime, because it can be changed into another prime (722977) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 361485 + 361486.

It is an arithmetic number, because the mean of its divisors is an integer number (361486).

2⁷²²⁹⁷¹ is an apocalyptic number.

722971 is a deficient number, since it is larger than the sum of its proper divisors (1).

722971 is an equidigital number, since it uses as much as digits as its factorization.

722971 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1764, while the sum is 28.

The square root of 722971 is about 850.2770136844. The cubic root of 722971 is about 89.7512058766.

The spelling of 722971 in words is "seven hundred twenty-two thousand, nine hundred seventy-one".