164659646 has 4 divisors (see below), whose sum is σ = 246989472. Its totient is φ = 82329822.

The previous prime is 164659639. The next prime is 164659661. The reversal of 164659646 is 646956461.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 646956461 = 11213 ⋅57697.

It is a super-2 number, since 2×164659646² = 54225598041690632, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 164659646.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 41164910 + ... + 41164913.

It is an arithmetic number, because the mean of its divisors is an integer number (61747368).

Almost surely, 2^164659646 is an apocalyptic number.

164659646 is a deficient number, since it is larger than the sum of its proper divisors (82329826).

164659646 is an equidigital number, since it uses as much as digits as its factorization.

164659646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82329825.

The product of its digits is 933120, while the sum is 47.

The square root of 164659646 is about 12831.9774781598. The cubic root of 164659646 is about 548.1032692054.

The spelling of 164659646 in words is "one hundred sixty-four million, six hundred fifty-nine thousand, six hundred forty-six".