165700064 has 24 divisors (see below), whose sum is σ = 343392840. Its totient is φ = 78489216.

The previous prime is 165700061. The next prime is 165700079. The reversal of 165700064 is 460007561.

It is a super-2 number, since 2×165700064² = 54913022419208192, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165700061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 135659 + ... + 136874.

It is an arithmetic number, because the mean of its divisors is an integer number (14308035).

Almost surely, 2^165700064 is an apocalyptic number.

It is an amenable number.

165700064 is an abundant number, since it is smaller than the sum of its proper divisors (177692776).

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

165700064 is a wasteful number, since it uses less digits than its factorization.

165700064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 272562 (or 272554 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 29.

The square root of 165700064 is about 12872.4536899536. The cubic root of 165700064 is about 549.2552608960.

The spelling of 165700064 in words is "one hundred sixty-five million, seven hundred thousand, sixty-four".