164675506 has 4 divisors (see below), whose sum is σ = 247013262. Its totient is φ = 82337752.

The previous prime is 164675501. The next prime is 164675519. The reversal of 164675506 is 605576461.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 109307025 + 55368481 = 10455^2 + 7441^2 .

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (164675501) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41168875 + ... + 41168878.

Almost surely, 2^164675506 is an apocalyptic number.

164675506 is a deficient number, since it is larger than the sum of its proper divisors (82337756).

164675506 is an equidigital number, since it uses as much as digits as its factorization.

164675506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82337755.

The product of its (nonzero) digits is 151200, while the sum is 40.

The square root of 164675506 is about 12832.5954506483. The cubic root of 164675506 is about 548.1208663905.

The spelling of 164675506 in words is "one hundred sixty-four million, six hundred seventy-five thousand, five hundred six".