164701649 has 8 divisors (see below), whose sum is σ = 190613760. Its totient is φ = 139385376.

The previous prime is 164701637. The next prime is 164701657. The reversal of 164701649 is 946107461.

It is a happy number.

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 164701649 - 2¹⁶ = 164636113 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (164701699) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 148364 + ... + 149469.

It is an arithmetic number, because the mean of its divisors is an integer number (23826720).

Almost surely, 2^164701649 is an apocalyptic number.

It is an amenable number.

164701649 is a deficient number, since it is larger than the sum of its proper divisors (25912111).

164701649 is an equidigital number, since it uses as much as digits as its factorization.

164701649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 297919.

The product of its (nonzero) digits is 36288, while the sum is 38.

The square root of 164701649 is about 12833.6140272333. The cubic root of 164701649 is about 548.1498704319.

The spelling of 164701649 in words is "one hundred sixty-four million, seven hundred one thousand, six hundred forty-nine".