106620187 has 2 divisors, whose sum is σ = 106620188. Its totient is φ = 106620186.

The previous prime is 106620167. The next prime is 106620193. The reversal of 106620187 is 781026601.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-106620187 is a prime.

It is a super-2 number, since 2×106620187² = 22735728551829938, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (106620167) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 53310093 + 53310094.

It is an arithmetic number, because the mean of its divisors is an integer number (53310094).

Almost surely, 2^106620187 is an apocalyptic number.

106620187 is a deficient number, since it is larger than the sum of its proper divisors (1).

106620187 is an equidigital number, since it uses as much as digits as its factorization.

106620187 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4032, while the sum is 31.

The square root of 106620187 is about 10325.7051575183. The cubic root of 106620187 is about 474.1835459178.

Adding to 106620187 its reverse (781026601), we get a palindrome (887646788).

The spelling of 106620187 in words is "one hundred six million, six hundred twenty thousand, one hundred eighty-seven".