106666723 has 2 divisors, whose sum is σ = 106666724. Its totient is φ = 106666722.

The previous prime is 106666673. The next prime is 106666733. The reversal of 106666723 is 327666601.

It is a strong prime.

It is an emirp because it is prime and its reverse (327666601) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-106666723 is a prime.

It is a super-2 number, since 2×106666723² = 22755579591117458, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (106666733) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 53333361 + 53333362.

It is an arithmetic number, because the mean of its divisors is an integer number (53333362).

Almost surely, 2^106666723 is an apocalyptic number.

106666723 is a deficient number, since it is larger than the sum of its proper divisors (1).

106666723 is an equidigital number, since it uses as much as digits as its factorization.

106666723 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 54432, while the sum is 37.

The square root of 106666723 is about 10327.9583171119. The cubic root of 106666723 is about 474.2525240869.

The spelling of 106666723 in words is "one hundred six million, six hundred sixty-six thousand, seven hundred twenty-three".