665510160 has 120 divisors (see below), whose sum is σ = 2399953536. Its totient is φ = 152113920.

The previous prime is 665510149. The next prime is 665510161. The reversal of 665510160 is 61015566.

It is a tau number, because it is divible by the number of its divisors (120).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (665510161) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 16536 + ... + 40055.

Almost surely, 2^665510160 is an apocalyptic number.

665510160 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

665510160 is an abundant number, since it is smaller than the sum of its proper divisors (1734443376).

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

665510160 is a wasteful number, since it uses less digits than its factorization.

665510160 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56621 (or 56608 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 30.

The square root of 665510160 is about 25797.4835982117. The cubic root of 665510160 is about 873.0750215336.

The spelling of 665510160 in words is "six hundred sixty-five million, five hundred ten thousand, one hundred sixty".