164172626 has 8 divisors (see below), whose sum is σ = 252914700. Its totient is φ = 79867728.

The previous prime is 164172623. The next prime is 164172629. The reversal of 164172626 is 626271461.

It is an interprime number because it is at equal distance from previous prime (164172623) and next prime (164172629).

It can be written as a sum of positive squares in 2 ways, for example, as 161925625 + 2247001 = 12725^2 + 1499^2 .

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

It is a super-2 number, since 2×164172626² = 53905302255471752, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (164172623) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1109201 + ... + 1109348.

Almost surely, 2^164172626 is an apocalyptic number.

164172626 is a deficient number, since it is larger than the sum of its proper divisors (88742074).

164172626 is a wasteful number, since it uses less digits than its factorization.

164172626 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2218588.

The product of its digits is 24192, while the sum is 35.

The square root of 164172626 is about 12812.9866151495. The cubic root of 164172626 is about 547.5623537054.

The spelling of 164172626 in words is "one hundred sixty-four million, one hundred seventy-two thousand, six hundred twenty-six".