164535986 has 16 divisors (see below), whose sum is σ = 251232000. Its totient is φ = 80803008.

The previous prime is 164535983. The next prime is 164536019. The reversal of 164535986 is 689535461.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 164535986.

It is not an unprimeable number, because it can be changed into a prime (164535983) 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, 28826 + ... + 34058.

It is an arithmetic number, because the mean of its divisors is an integer number (15702000).

Almost surely, 2^164535986 is an apocalyptic number.

164535986 is a deficient number, since it is larger than the sum of its proper divisors (86696014).

164535986 is a wasteful number, since it uses less digits than its factorization.

164535986 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5513.

The product of its digits is 777600, while the sum is 47.

The square root of 164535986 is about 12827.1581420048. The cubic root of 164535986 is about 547.9660256523.

The spelling of 164535986 in words is "one hundred sixty-four million, five hundred thirty-five thousand, nine hundred eighty-six".