164655403 has 4 divisors (see below), whose sum is σ = 179624088. Its totient is φ = 149686720.

The previous prime is 164655401. The next prime is 164655419. The reversal of 164655403 is 304556461.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 304556461 = 11 ⋅27686951.

It is a cyclic number.

It is not a de Polignac number, because 164655403 - 2¹ = 164655401 is a prime.

It is a super-2 number, since 2×164655403² = 54222803474184818, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (164655401) 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 3 ways as a sum of consecutive naturals, for example, 7484326 + ... + 7484347.

It is an arithmetic number, because the mean of its divisors is an integer number (44906022).

Almost surely, 2^164655403 is an apocalyptic number.

164655403 is a deficient number, since it is larger than the sum of its proper divisors (14968685).

164655403 is a wasteful number, since it uses less digits than its factorization.

164655403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14968684.

The product of its (nonzero) digits is 43200, while the sum is 34.

The square root of 164655403 is about 12831.8121479392. The cubic root of 164655403 is about 548.0985612676.

The spelling of 164655403 in words is "one hundred sixty-four million, six hundred fifty-five thousand, four hundred three".