164626427 has 12 divisors (see below), whose sum is σ = 195120576. Its totient is φ = 138443760.

The previous prime is 164626421. The next prime is 164626447. The reversal of 164626427 is 724626461.

It is not a de Polignac number, because 164626427 - 2⁴ = 164626411 is a prime.

It is not an unprimeable number, because it can be changed into a prime (164626421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 29099 + ... + 34292.

It is an arithmetic number, because the mean of its divisors is an integer number (16260048).

Almost surely, 2^164626427 is an apocalyptic number.

164626427 is a deficient number, since it is larger than the sum of its proper divisors (30494149).

164626427 is an equidigital number, since it uses as much as digits as its factorization.

164626427 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63458 (or 63451 counting only the distinct ones).

The product of its digits is 96768, while the sum is 38.

The square root of 164626427 is about 12830.6830293636. The cubic root of 164626427 is about 548.0664079839.

The spelling of 164626427 in words is "one hundred sixty-four million, six hundred twenty-six thousand, four hundred twenty-seven".