165700850 has 72 divisors (see below), whose sum is σ = 366405120. Its totient is φ = 55564320.

The previous prime is 165700817. The next prime is 165700861. The reversal of 165700850 is 58007561.

It is an unprimeable number.

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 35 ways as a sum of consecutive naturals, for example, 114431 + ... + 115869.

It is an arithmetic number, because the mean of its divisors is an integer number (5088960).

Almost surely, 2^165700850 is an apocalyptic number.

165700850 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

165700850 is an abundant number, since it is smaller than the sum of its proper divisors (200704270).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

165700850 is a wasteful number, since it uses less digits than its factorization.

165700850 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1512 (or 1500 counting only the distinct ones).

The product of its (nonzero) digits is 8400, while the sum is 32.

The square root of 165700850 is about 12872.4842202273. The cubic root of 165700850 is about 549.2561293607.

The spelling of 165700850 in words is "one hundred sixty-five million, seven hundred thousand, eight hundred fifty".