106661803 has 2 divisors, whose sum is σ = 106661804. Its totient is φ = 106661802.

The previous prime is 106661777. The next prime is 106661813. The reversal of 106661803 is 308166601.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 106661803 - 2¹³ = 106653611 is a prime.

It is a super-2 number, since 2×106661803² = 22753480438421618, which contains 22 as substring.

It is equal to p_6122587 and since 106661803 and 6122587 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (106661813) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 53330901 + 53330902.

It is an arithmetic number, because the mean of its divisors is an integer number (53330902).

Almost surely, 2^106661803 is an apocalyptic number.

106661803 is a deficient number, since it is larger than the sum of its proper divisors (1).

106661803 is an equidigital number, since it uses as much as digits as its factorization.

106661803 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5184, while the sum is 31.

The square root of 106661803 is about 10327.7201259523. The cubic root of 106661803 is about 474.2452323460.

The spelling of 106661803 in words is "one hundred six million, six hundred sixty-one thousand, eight hundred three".