16726397 has 2 divisors, whose sum is σ = 16726398. Its totient is φ = 16726396.

The previous prime is 16726379. The next prime is 16726427. The reversal of 16726397 is 79362761.

Together with previous prime (16726379) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12013156 + 4713241 = 3466^2 + 2171^2 .

It is a cyclic number.

It is not a de Polignac number, because 16726397 - 2⁸ = 16726141 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16726337) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8363198 + 8363199.

It is an arithmetic number, because the mean of its divisors is an integer number (8363199).

Almost surely, 2^16726397 is an apocalyptic number.

It is an amenable number.

16726397 is a deficient number, since it is larger than the sum of its proper divisors (1).

16726397 is an equidigital number, since it uses as much as digits as its factorization.

16726397 is an evil number, because the sum of its binary digits is even.

The product of its digits is 95256, while the sum is 41.

The square root of 16726397 is about 4089.7918039920. The cubic root of 16726397 is about 255.7412597779.

The spelling of 16726397 in words is "sixteen million, seven hundred twenty-six thousand, three hundred ninety-seven".