164997489 has 8 divisors (see below), whose sum is σ = 225362592. Its totient is φ = 107315360.

The previous prime is 164997487. The next prime is 164997491. The reversal of 164997489 is 984799461.

It is an interprime number because it is at equal distance from previous prime (164997487) and next prime (164997491).

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 164997489 - 2¹ = 164997487 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (164997487) 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, 670599 + ... + 670844.

It is an arithmetic number, because the mean of its divisors is an integer number (28170324).

Almost surely, 2^164997489 is an apocalyptic number.

It is an amenable number.

164997489 is a deficient number, since it is larger than the sum of its proper divisors (60365103).

164997489 is a wasteful number, since it uses less digits than its factorization.

164997489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1341487.

The product of its digits is 3919104, while the sum is 57.

The square root of 164997489 is about 12845.1348377508. The cubic root of 164997489 is about 548.4778729364.

The spelling of 164997489 in words is "one hundred sixty-four million, nine hundred ninety-seven thousand, four hundred eighty-nine".