164320265 has 8 divisors (see below), whose sum is σ = 207562560. Its totient is φ = 124537392.

The previous prime is 164320229. The next prime is 164320297. The reversal of 164320265 is 562023461.

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 164320265 - 2²² = 160125961 is a prime.

It is a super-2 number, since 2×164320265² = 54002298979340450, which contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 864749 + ... + 864938.

It is an arithmetic number, because the mean of its divisors is an integer number (25945320).

Almost surely, 2^164320265 is an apocalyptic number.

It is an amenable number.

164320265 is a deficient number, since it is larger than the sum of its proper divisors (43242295).

164320265 is a wasteful number, since it uses less digits than its factorization.

164320265 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1729711.

The product of its (nonzero) digits is 8640, while the sum is 29.

The square root of 164320265 is about 12818.7466235978. The cubic root of 164320265 is about 547.7264438648.

The spelling of 164320265 in words is "one hundred sixty-four million, three hundred twenty thousand, two hundred sixty-five".