106159987 has 2 divisors, whose sum is σ = 106159988. Its totient is φ = 106159986.

The previous prime is 106159979. The next prime is 106160003. The reversal of 106159987 is 789951601.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 106159987 - 2³ = 106159979 is a prime.

It is a super-2 number, since 2×106159987² = 22539885679680338, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (106159957) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 53079993 + 53079994.

It is an arithmetic number, because the mean of its divisors is an integer number (53079994).

Almost surely, 2^106159987 is an apocalyptic number.

106159987 is a deficient number, since it is larger than the sum of its proper divisors (1).

106159987 is an equidigital number, since it uses as much as digits as its factorization.

106159987 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 136080, while the sum is 46.

The square root of 106159987 is about 10303.3968670531. The cubic root of 106159987 is about 473.5003295014.

It can be divided in two parts, 10615 and 9987, that added together give a palindrome (20602).

The spelling of 106159987 in words is "one hundred six million, one hundred fifty-nine thousand, nine hundred eighty-seven".