164826681 has 8 divisors (see below), whose sum is σ = 219832320. Its totient is φ = 109852752.

The previous prime is 164826667. The next prime is 164826719. The reversal of 164826681 is 186628461.

164826681 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 not a de Polignac number, because 164826681 - 2¹⁰ = 164825657 is a prime.

It is a super-2 number, since 2×164826681² = 54335669538951522, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (164826281) 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, 9991 + ... + 20723.

It is an arithmetic number, because the mean of its divisors is an integer number (27479040).

Almost surely, 2^164826681 is an apocalyptic number.

It is an amenable number.

164826681 is a deficient number, since it is larger than the sum of its proper divisors (55005639).

164826681 is a wasteful number, since it uses less digits than its factorization.

164826681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15855.

The product of its digits is 110592, while the sum is 42.

The square root of 164826681 is about 12838.4843731649. The cubic root of 164826681 is about 548.2885432774.

The spelling of 164826681 in words is "one hundred sixty-four million, eight hundred twenty-six thousand, six hundred eighty-one".