189696587 has 8 divisors (see below), whose sum is σ = 190744176. Its totient is φ = 188652672.

The previous prime is 189696547. The next prime is 189696599. The reversal of 189696587 is 785696981.

189696587 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-189696587 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (189696517) 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, 201983 + ... + 202919.

It is an arithmetic number, because the mean of its divisors is an integer number (23843022).

Almost surely, 2^189696587 is an apocalyptic number.

189696587 is a deficient number, since it is larger than the sum of its proper divisors (1047589).

189696587 is an equidigital number, since it uses as much as digits as its factorization.

189696587 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1837.

The product of its digits is 6531840, while the sum is 59.

The square root of 189696587 is about 13773.0384084268. The cubic root of 189696587 is about 574.5835290479.

The spelling of 189696587 in words is "one hundred eighty-nine million, six hundred ninety-six thousand, five hundred eighty-seven".