164844997 has 16 divisors (see below), whose sum is σ = 172042560. Its totient is φ = 157852800.

The previous prime is 164844989. The next prime is 164845061. The reversal of 164844997 is 799448461.

It is a cyclic number.

It is not a de Polignac number, because 164844997 - 2³ = 164844989 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 (164844907) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 586497 + ... + 586777.

It is an arithmetic number, because the mean of its divisors is an integer number (10752660).

Almost surely, 2^164844997 is an apocalyptic number.

It is an amenable number.

164844997 is a deficient number, since it is larger than the sum of its proper divisors (7197563).

164844997 is a wasteful number, since it uses less digits than its factorization.

164844997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 564.

The product of its digits is 1741824, while the sum is 52.

The square root of 164844997 is about 12839.1976774252. The cubic root of 164844997 is about 548.3088516420.

The spelling of 164844997 in words is "one hundred sixty-four million, eight hundred forty-four thousand, nine hundred ninety-seven".