16722077 has 2 divisors, whose sum is σ = 16722078. Its totient is φ = 16722076.

The previous prime is 16722073. The next prime is 16722089. The reversal of 16722077 is 77022761.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 16048036 + 674041 = 4006^2 + 821^2 .

It is a cyclic number.

It is not a de Polignac number, because 16722077 - 2² = 16722073 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16722073) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8361038 + 8361039.

It is an arithmetic number, because the mean of its divisors is an integer number (8361039).

Almost surely, 2^16722077 is an apocalyptic number.

It is an amenable number.

16722077 is a deficient number, since it is larger than the sum of its proper divisors (1).

16722077 is an equidigital number, since it uses as much as digits as its factorization.

16722077 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8232, while the sum is 32.

The square root of 16722077 is about 4089.2636256422. The cubic root of 16722077 is about 255.7192407427.

The spelling of 16722077 in words is "sixteen million, seven hundred twenty-two thousand, seventy-seven".