164630565 has 48 divisors (see below), whose sum is σ = 314421120. Its totient is φ = 79021440.

The previous prime is 164630563. The next prime is 164630569. The reversal of 164630565 is 565036461.

164630565 is a `hidden beast` number, since 1 + 64 + 6 + 30 + 565 = 666.

It is not a de Polignac number, because 164630565 - 2¹ = 164630563 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (164630563) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 49371 + ... + 52599.

It is an arithmetic number, because the mean of its divisors is an integer number (6550440).

Almost surely, 2^164630565 is an apocalyptic number.

164630565 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

164630565 is a deficient number, since it is larger than the sum of its proper divisors (149790555).

164630565 is a wasteful number, since it uses less digits than its factorization.

164630565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3354 (or 3351 counting only the distinct ones).

The product of its (nonzero) digits is 64800, while the sum is 36.

The square root of 164630565 is about 12830.8442824313. The cubic root of 164630565 is about 548.0709999559.

The spelling of 164630565 in words is "one hundred sixty-four million, six hundred thirty thousand, five hundred sixty-five".