164997497 has 8 divisors (see below), whose sum is σ = 191660352. Its totient is φ = 139107600.

The previous prime is 164997491. The next prime is 164997601. The reversal of 164997497 is 794799461.

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 164997497 - 2⁸ = 164997241 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (164997491) 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, 192779 + ... + 193632.

It is an arithmetic number, because the mean of its divisors is an integer number (23957544).

Almost surely, 2^164997497 is an apocalyptic number.

It is an amenable number.

164997497 is a deficient number, since it is larger than the sum of its proper divisors (26662855).

164997497 is an equidigital number, since it uses as much as digits as its factorization.

164997497 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 386479.

The product of its digits is 3429216, while the sum is 56.

The square root of 164997497 is about 12845.1351491528. The cubic root of 164997497 is about 548.4778818008.

The spelling of 164997497 in words is "one hundred sixty-four million, nine hundred ninety-seven thousand, four hundred ninety-seven".