106664549 has 2 divisors, whose sum is σ = 106664550. Its totient is φ = 106664548.

The previous prime is 106664531. The next prime is 106664557. The reversal of 106664549 is 945466601.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 106296100 + 368449 = 10310^2 + 607^2 .

It is a cyclic number.

It is not a de Polignac number, because 106664549 - 2⁸ = 106664293 is a prime.

It is a super-2 number, since 2×106664549² = 22754652026746802, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (106664449) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 53332274 + 53332275.

It is an arithmetic number, because the mean of its divisors is an integer number (53332275).

Almost surely, 2^106664549 is an apocalyptic number.

It is an amenable number.

106664549 is a deficient number, since it is larger than the sum of its proper divisors (1).

106664549 is an equidigital number, since it uses as much as digits as its factorization.

106664549 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 155520, while the sum is 41.

The square root of 106664549 is about 10327.8530682809. The cubic root of 106664549 is about 474.2493021136.

The spelling of 106664549 in words is "one hundred six million, six hundred sixty-four thousand, five hundred forty-nine".