164626387 has 6 divisors (see below), whose sum is σ = 172095812. Its totient is φ = 157468212.

The previous prime is 164626361. The next prime is 164626409. The reversal of 164626387 is 783626461.

It is a de Polignac number, because none of the positive numbers 2^k-164626387 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (164626087) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 155073 + ... + 156130.

Almost surely, 2^164626387 is an apocalyptic number.

164626387 is a deficient number, since it is larger than the sum of its proper divisors (7469425).

164626387 is an equidigital number, since it uses as much as digits as its factorization.

164626387 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 311249 (or 311226 counting only the distinct ones).

The product of its digits is 290304, while the sum is 43.

The square root of 164626387 is about 12830.6814706001. The cubic root of 164626387 is about 548.0663635952.

The spelling of 164626387 in words is "one hundred sixty-four million, six hundred twenty-six thousand, three hundred eighty-seven".