106657987 has 2 divisors, whose sum is σ = 106657988. Its totient is φ = 106657986.

The previous prime is 106657961. The next prime is 106657997. The reversal of 106657987 is 789756601.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 106657987 - 2¹⁵ = 106625219 is a prime.

It is a super-2 number, since 2×106657987² = 22751852381784338, which contains 22 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 106657987.

It is not a weakly prime, because it can be changed into another prime (106657927) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 53328993 + 53328994.

It is an arithmetic number, because the mean of its divisors is an integer number (53328994).

Almost surely, 2^106657987 is an apocalyptic number.

106657987 is a deficient number, since it is larger than the sum of its proper divisors (1).

106657987 is an equidigital number, since it uses as much as digits as its factorization.

106657987 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 635040, while the sum is 49.

The square root of 106657987 is about 10327.5353787823. The cubic root of 106657987 is about 474.2395766463.

The spelling of 106657987 in words is "one hundred six million, six hundred fifty-seven thousand, nine hundred eighty-seven".