164646461 has 8 divisors (see below), whose sum is σ = 191718144. Its totient is φ = 138462480.

The previous prime is 164646439. The next prime is 164646467.

164646461 is nontrivially palindromic in base 10.

164646461 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 a cyclic number.

It is not a de Polignac number, because 164646461 - 2¹⁴ = 164630077 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (164646467) 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, 221525 + ... + 222266.

It is an arithmetic number, because the mean of its divisors is an integer number (23964768).

Almost surely, 2^164646461 is an apocalyptic number.

It is an amenable number.

164646461 is a deficient number, since it is larger than the sum of its proper divisors (27071683).

164646461 is an equidigital number, since it uses as much as digits as its factorization.

164646461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 443851.

The product of its digits is 82944, while the sum is 38.

The square root of 164646461 is about 12831.4637122972. The cubic root of 164646461 is about 548.0886391596.

The spelling of 164646461 in words is "one hundred sixty-four million, six hundred forty-six thousand, four hundred sixty-one".