722977 has 2 divisors, whose sum is σ = 722978. Its totient is φ = 722976.

The previous prime is 722971. The next prime is 722983. The reversal of 722977 is 779227.

It is a happy number.

It is a balanced prime because it is at equal distance from previous prime (722971) and next prime (722983).

It can be written as a sum of positive squares in only one way, i.e., 665856 + 57121 = 816^2 + 239^2 .

It is a cyclic number.

It is not a de Polignac number, because 722977 - 2⁷ = 722849 is a prime.

It is not a weakly prime, because it can be changed into another prime (722971) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 361488 + 361489.

It is an arithmetic number, because the mean of its divisors is an integer number (361489).

2⁷²²⁹⁷⁷ is an apocalyptic number.

It is an amenable number.

722977 is a deficient number, since it is larger than the sum of its proper divisors (1).

722977 is an equidigital number, since it uses as much as digits as its factorization.

722977 is an evil number, because the sum of its binary digits is even.

The product of its digits is 12348, while the sum is 34.

The square root of 722977 is about 850.2805419390. The cubic root of 722977 is about 89.7514541603.

The spelling of 722977 in words is "seven hundred twenty-two thousand, nine hundred seventy-seven".