165915064 has 32 divisors (see below), whose sum is σ = 355996800. Its totient is φ = 71013600.

The previous prime is 165915047. The next prime is 165915137. The reversal of 165915064 is 460519561.

It is a congruent 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, 57447 + ... + 60265.

It is an arithmetic number, because the mean of its divisors is an integer number (11124900).

Almost surely, 2^165915064 is an apocalyptic number.

165915064 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

165915064 is an abundant number, since it is smaller than the sum of its proper divisors (190081736).

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

165915064 is a wasteful number, since it uses less digits than its factorization.

165915064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3883 (or 3879 counting only the distinct ones).

The product of its (nonzero) digits is 32400, while the sum is 37.

The square root of 165915064 is about 12880.8021489347. The cubic root of 165915064 is about 549.4927157289.

It can be divided in two parts, 16 and 5915064, that added together give a triangular number (5915080 = T₃₄₃₉).

The spelling of 165915064 in words is "one hundred sixty-five million, nine hundred fifteen thousand, sixty-four".