165664430 has 8 divisors (see below), whose sum is σ = 298195992. Its totient is φ = 66265768.

The previous prime is 165664427. The next prime is 165664451. The reversal of 165664430 is 34466561.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8283212 + ... + 8283231.

It is an arithmetic number, because the mean of its divisors is an integer number (37274499).

Almost surely, 2^165664430 is an apocalyptic number.

165664430 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

165664430 is a deficient number, since it is larger than the sum of its proper divisors (132531562).

165664430 is a wasteful number, since it uses less digits than its factorization.

165664430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16566450.

The product of its (nonzero) digits is 51840, while the sum is 35.

The square root of 165664430 is about 12871.0694971319. The cubic root of 165664430 is about 549.2158854030.

The spelling of 165664430 in words is "one hundred sixty-five million, six hundred sixty-four thousand, four hundred thirty".