1689106087 has 8 divisors (see below), whose sum is σ = 1700179056. Its totient is φ = 1678048512.

The previous prime is 1689106063. The next prime is 1689106147. The reversal of 1689106087 is 7806019861.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1689106087 - 2¹⁹ = 1688581799 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1689106007) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 285463 + ... + 291319.

It is an arithmetic number, because the mean of its divisors is an integer number (212522382).

Almost surely, 2^1689106087 is an apocalyptic number.

1689106087 is a deficient number, since it is larger than the sum of its proper divisors (11072969).

1689106087 is a wasteful number, since it uses less digits than its factorization.

1689106087 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7697.

The product of its (nonzero) digits is 145152, while the sum is 46.

The square root of 1689106087 is about 41098.7358321397. The cubic root of 1689106087 is about 1190.9283735371.

The spelling of 1689106087 in words is "one billion, six hundred eighty-nine million, one hundred six thousand, eighty-seven".