164409697 has 4 divisors (see below), whose sum is σ = 164482096. Its totient is φ = 164337300.

The previous prime is 164409653. The next prime is 164409731. The reversal of 164409697 is 796904461.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 164409697 - 2⁷ = 164409569 is a prime.

It is a super-3 number, since 3×164409697³ (a number of 26 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (164400697) 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, 32679 + ... + 37372.

It is an arithmetic number, because the mean of its divisors is an integer number (41120524).

Almost surely, 2^164409697 is an apocalyptic number.

It is an amenable number.

164409697 is a deficient number, since it is larger than the sum of its proper divisors (72399).

164409697 is an equidigital number, since it uses as much as digits as its factorization.

164409697 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72398.

The product of its (nonzero) digits is 326592, while the sum is 46.

The square root of 164409697 is about 12822.2344776564. The cubic root of 164409697 is about 547.8257933219.

The spelling of 164409697 in words is "one hundred sixty-four million, four hundred nine thousand, six hundred ninety-seven".