164660771 has 18 divisors (see below), whose sum is σ = 185625468. Its totient is φ = 144855360.

The previous prime is 164660761. The next prime is 164660791. The reversal of 164660771 is 177066461.

It is a de Polignac number, because none of the positive numbers 2^k-164660771 is a prime.

It is a super-2 number, since 2×164660771² = 54226339012628882, which contains 22 as substring.

It is a Smith number, since the sum of its digits (38) coincides with the sum of the digits of its prime factors.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (164660731) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 2255591 + ... + 2255663.

It is an arithmetic number, because the mean of its divisors is an integer number (10312526).

Almost surely, 2^164660771 is an apocalyptic number.

164660771 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

164660771 is a deficient number, since it is larger than the sum of its proper divisors (20964697).

164660771 is an frugal number, since it uses more digits than its factorization.

164660771 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 263 (or 137 counting only the distinct ones).

The product of its (nonzero) digits is 42336, while the sum is 38.

The square root of 164660771 is about 12832.0213138850. The cubic root of 164660771 is about 548.1045174667.

The spelling of 164660771 in words is "one hundred sixty-four million, six hundred sixty thousand, seven hundred seventy-one".